Call Smart Watch VO511 Fitness Tracker Bracelet Smart Watch

1. Product Definition, Target Buyers & End-User Scenarios

The VO511 is an economical entry-level round smart watch built for mass daily fitness and communication needs. Furthermore, its core market advantage lies in balanced full Bluetooth calling functionality and IP67 dust-splash protection at a competitive budget price point.

Notably, this cost-reduced model removes advanced multi-vital sensors such as ECG, blood pressure and continuous body temperature tracking. Therefore, it focuses on basic heart rate, blood oxygen and sleep monitoring for daily lightweight wellness tracking.

In addition, this entry wearable targets three core groups of B2B wholesale partners. These partners include mass-market budget fitness accessory distributors, corporate promotional gift suppliers and entry-level private-label wellness brand operators targeting price-sensitive consumers.

Consequently, cost-conscious all-gender end users select this round watch for casual daily communication and low-intensity fitness activities. Specifically, it fits office daily wear, walking, jogging and simple gym workouts without advanced medical-grade monitoring demands.

Besides, this budget Bluetooth call watch completes Vositone’s tiered call-watch product matrix. Moreover, it complements mid-range VO508 fashion call watches, rugged VO531 outdoor watches and lightweight VO441 fitness bands to cover all price brackets for bulk sourcing.

VO508 Fashion Bluetooth Call Watch | VO531 IP68 Outdoor Rugged Watch | VO441 Swimming Fitness Band | V25 Budget Temp Tracker Band

In particular, every hardware parameter and basic vital sensor test record shown on this page comes from standardized factory laboratory testing. Therefore, we eliminate vague exaggerated marketing wording and retain only verifiable entry-level technical indicators for client quotation and batch QC inspection.

2. Verified Core Hardware Specifications

Furthermore, each hardware component passes strict factory calibration before final assembly. Specifically, segmented clear data supports direct side-by-side product comparison for bulk purchasing wholesale buyers.

2.1 1.3 Inch Round HD Touch Display & Slim Lightweight Alloy Case

1.3” Round HD Color Full-Touch Screen

The watch is equipped with a compact 1.3-inch circular HD color full-touch panel. In addition, moderate screen brightness adjustment ensures readable display content under both indoor ambient light and bright outdoor sunlight.

Meanwhile, simplified smooth touch sliding navigation lowers operation difficulty for young students and elderly casual users.

Besides, dozens of minimalist daily-style watch face templates are preloaded in the firmware. Custom watch face images can be uploaded via the matched multi-language wellness APP.

Slim Lightweight Round Alloy Frame, 9.65mm Thin Body

Light thin alloy forms the round main protective frame. Moreover, the ultra-slim 9.65mm body and only 38g main unit weight greatly reduce long-wear wrist burden for all-day daily use.

Consequently, the lightweight slim design balances daily fashion wearing comfort and basic call-fitness functional demands for mass consumer groups.

Notably, the case structure omits dedicated sensor hardware required for ECG, air-pump blood pressure and temperature detection to control overall product cost.

Adjustable Soft Sweat-Proof Silicone Wrist Strap

Each VO511 package includes one flexible adjustable soft silicone wrist strap. Moreover, multiple neutral daily color stock options match mass-market casual and office wearing styles.

Furthermore, OEM wholesale clients can request unified custom strap color matching for large-volume bulk order batches.

2.2 Bluetooth 5.0 Connection & Cross-Platform Mobile OS Compatibility

Bluetooth 5.0 Low-Power Chip with Complete Two-Way Calling

The built-in stable Bluetooth 5.0 chip establishes anti-interference wireless pairing with smartphones. In addition, users can dial new numbers, answer incoming calls and store frequent contact lists directly inside the watch local memory.

Besides, the system generates continuous silent vibration reminders for SMS text messages and all mainstream social media application notifications after successful Bluetooth connection.

Notably, this budget fitness watch does not integrate standalone GPS hardware. Therefore, all sport route trajectory records fully depend on GPS signals captured from the paired mobile phone inside the wellness APP.

Wide Cross-System Mobile Device Adaptation

It maintains consistent stable Bluetooth pairing with Android 8.0 and newer mobile handsets. Moreover, it also operates normally for iOS 9.0 and above Apple mobile devices.

Consequently, broad operating system compatibility reduces device adaptation risks for global cross-border mass-market resellers and individual casual end consumers.

2.3 Lithium-Polymer Battery & Magnetic Pogo-Pin Charging System

Magnetic Suction Pogo-Pin Charging Dock

Magnetic automatic alignment simplifies daily recharging operation without precise plug alignment. Besides, the semi-sealed charging port blocks daily dust and light sweat to protect internal Bluetooth and sensor circuit assemblies.

In addition, it works with all ordinary 5V/1A USB wall adapters and portable power banks for universal charging access during commutes and short trips.

Meanwhile, a complete empty-to-full battery charging cycle takes roughly 2 hours under standard laboratory test environments.

Lab-Validated Multi-Day Mixed Usage Battery Runtime

The integrated lithium-polymer battery includes multi-layer basic safety protection circuits. These circuits prevent overcharging, over-discharging and minor internal short-circuit safety hazards.

Furthermore, continuous factory lab testing records stable 5–7 days daily runtime under mixed usage with frequent Bluetooth calling and daily heart rate/SpO2 automatic sampling active.

2.4 IP67 Daily Dust & Sweat Waterproof Usage Guidelines (ISO 22810 Standard)

The VO511 fully complies with ISO 22810 IP67 industrial dust and splash waterproof specification. Furthermore, it resists daily surface dust accumulation, routine sweat, hand-wash splashes and brief light rain exposure during casual outdoor walks.

Permitted Daily Wear Usage Scenarios

Therefore, users may wear this budget call watch during office desk work, indoor low-intensity fitness training and short outdoor strolls under mild light drizzle weather.

Prohibited Long-Immersion & High-Temperature Water Scenarios

Conversely, avoid wearing this entry fitness watch for swimming, snorkeling, deep diving, hot bathing or sauna sessions at all times.

Moreover, long-term soaking, hot water steam and high humidity environments accelerate aging speed of internal waterproof rubber sealing gaskets.

Consequently, circuit damage caused by prolonged deep water immersion or high-temperature steam will void the official 12-month global hardware warranty coverage.

Natural Internal Gasket Aging Reminder

In particular, internal waterproof rubber sealing components degrade gradually over months of daily continuous wear. Therefore, weakened dust and splash resistance counts as normal physical wear instead of manufacturing defects.

3. Basic PPG Sensor 24H Heart Rate & SpO2 Wellness Tracking Functions

Mandatory Non-Medical Disclaimer

First of all, all automatic and manual-trigger heart rate, SpO2 and sleep cycle data serve purely for consumer-level lightweight daily wellness reference only.

Furthermore, this budget round smart watch is not officially certified medical diagnostic equipment. Therefore, its measured numerical values cannot substitute hospital professional medical diagnostic hardware or licensed clinical medical judgement.

In addition, users must not rely solely on this watch’s basic vital data to judge cardiovascular symptoms or make medical treatment decisions. Consequently, seek formal licensed medical support immediately when facing sustained palpitations, chest discomfort or abnormal physiological indicators.

Meanwhile, practical measurement deviation will appear due to multiple external interference factors during daily casual wear.

Specifically, key influencing factors include silicone strap wearing tightness, arm hair density, skin tattoos, skin texture and fluctuating indoor or outdoor ambient temperatures.

3.1 24-Hour Automatic & Manual Heart Rate + Blood Oxygen Monitoring

The basic built-in PPG optical sensor runs uninterrupted round-the-clock automatic heart rate and SpO2 sampling throughout all daily activity cycles. Users can also trigger one-off manual measurement with single screen taps for real-time spot checks.

3.2 Multi-Stage Overnight Sleep Cycle Recording

The simplified intelligent sleep analysis module automatically records complete overnight rest cycles. It separates light sleep and deep sleep stages to generate basic daily sleep quality evaluation for casual wellness reference.

Notably, this model does not support REM sleep detailed analysis, body temperature tracking, ECG waveform capture or oscillometric blood pressure measurement to maintain entry-level cost positioning.

3.3 Multiple Low-to-Moderate Intensity Sport Offline Recording Modes

The device firmware pre-installs multiple basic sport mode profiles optimized for mass-market casual fitness activities. Supported modes cover walking, slow jogging, cycling, badminton and daily recreational ball sports.

In addition, the watch locally stores exercise duration, real-time step counts and total calorie consumption data offline without constant Bluetooth connection.

Therefore, all cached offline sport activity records synchronize to the multi-language wellness APP once stable Bluetooth pairing re-establishes indoors.

4. Bluetooth Call Communication System, Daily Auxiliary Tools & Multi-Language APP Cloud Ecosystem

4.1 Full Two-Way Bluetooth Calling & Message Vibration Notification System

After stable Bluetooth 5.0 pairing, users make, answer and hang up voice calls directly via the watch’s built-in small speaker and microphone. Moreover, the watch automatically synchronizes daily real-time local weather forecast data from the linked mobile phone.

Consequently, mass-market casual wearers can reasonably adjust outdoor walking and light workout plans according to updated weather condition information without frequently checking mobile phones.

4.2 Lightweight Built-In Daily Practical Auxiliary Tools

In particular, this budget entry call watch integrates a full set of simplified touch-operated auxiliary life tools suitable for student, office and casual fitness daily scenarios.

Besides, available core tools include Bluetooth music playback control for daily commuting entertainment.

Furthermore, it also supports multi-group adjustable daily alarms, sedentary standing activity reminders, regular drinking hydration alerts and stopwatch timing functions.

4.3 Multi-Language APP Cloud Storage & Long-Term Basic Wellness Trend Reports

The matching multi-language wellness APP creates bidirectional cloud data synchronization with the VO511 budget round watch. In addition, it permanently archives all offline-generated heart rate, SpO2, sleep and sport historical records.

Specifically, stored archived datasets cover complete daily basic vital logs, multi-stage sleep records and casual fitness training statistics.

Moreover, the APP platform generates auto-calculated weekly and monthly simplified wellness trend charts to visualize long-term light fitness tracking data for personal daily reference.

Consequently, the built-in cloud backup function prevents permanent loss of personal historical basic heart rate and fitness tracking data.

5. B2B Wholesale Terms & Tiered Budget Bluetooth Call Watch OEM / ODM Customization Packages

Vositone owns more than 16 years of wearable device research and mass manufacturing production experience. Furthermore, our standardized factory occupies over 10,000 square meters with complete assembly and basic Bluetooth communication testing production lines.

In addition, the internal professional team includes 70+ specialized dedicated R&D engineers together with 300+ full-time production operation staff.

Besides, we hold more than 30 wearable-related technical invention patents covering Bluetooth call audio and basic PPG sensor algorithms. Meanwhile, the factory maintains an ultra-low 0.12% finished product defect rate after four-round full QC inspection procedures.

Consequently, monthly stable mass production capacity reaches 50,000+ units to fulfil continuous global mass-market budget bulk wholesale and entry call watch OEM customization order demands.

5.1 Tiered MOQ Customization Rules (Entry-Level Budget Round Bluetooth Call Watch Line)

• 100 units: Custom laser engraved buyer brand logo on the round lightweight alloy watch middle frame
• 300–500 units: Custom budget fitness & corporate gift themed retail gift boxes for small-volume white-label market trial orders
• 1,000 units: Standard OEM adjustments: soft silicone strap colour matching, packaging redesign, system UI redesign, custom boot animation, basic firmware tuning for Bluetooth call audio volume and light-sport mode logic
• 3,000 units: In-depth ODM development: multi-light-sport algorithm calibration, basic PPG heart rate & SpO2 sensor parameter optimization, exclusive branded independent wellness APP programming
• 0 MOQ flexible support: Suitable for dropshipping and tiny-batch brand market test small orders

5.2 Sample Fabrication & Mass Production Lead Time Schedule

Standard sample prototype development requires 10 to 15 working days. Furthermore, expedited rush sample service completes all prototype manufacturing work within 7 working days for urgent corporate gift and mass-market client project requirements.

In addition, full sample development fees can be fully deducted against subsequent formal mass purchase orders after client deposit payment confirmation.

Meanwhile, regular OEM bulk mass production cycles run 30–45 working days once the factory receives and verifies the client deposit transfer.

Alternatively, deep full-scope ODM development projects require 45–60 working days for complete basic PPG sensor calibration plus exclusive branded wellness APP programming development work.

5.3 Global Cross-Border Trade Compliance & Complete Batch Certification Documentation

This VO511 budget round call watch series obtains full complete sets of global cross-border trade compliance certifications: CE RED, FCC, RoHS, REACH, GCC, WEEE and ISO9001 quality management system.

Furthermore, complete batch certification documents support barrier-free smooth customs clearance across all major international import market regions worldwide.

Consequently, valid official certification files eliminate cargo detention delays caused by third-party port re-inspection audit checks.

In addition, all non-compliant Bluetooth SIG BQB related descriptive text has been fully removed to satisfy unified cross-border e-commerce platform content standard requirements.

Notably: Built-in heart rate and SpO2 measurement remain consumer lightweight wellness-oriented functions only. This entry watch carries no official medical device certification from global regulatory authorities.

5.4 Factory Four-Stage QC Testing Workflow & 12-Month Limited Global Hardware Warranty

Every finished VO511 unit undergoes four-phase factory aging testing plus end-to-end full Bluetooth call and basic PPG sensor function calibration before shipment dispatch. Specifically, mandatory test items include IP67 dust and splash-proof sealing validation, Bluetooth call audio stability test and basic heart rate & SpO2 sensor accuracy calibration.

Meanwhile, the 12-month global limited hardware warranty only covers confirmed original manufacturing defects of the main electronic watch core and Bluetooth communication module.

Conversely, soft silicone wrist straps count as disposable consumable accessories and sit fully outside all official warranty coverage scope.

Furthermore, naturally aged internal waterproof sealing gaskets and user-inflicted physical impact scratch damage are also excluded from all warranty protection terms and conditions.

5.5 NDA Confidentiality Agreement & Full Intellectual Property Transfer Terms

All custom-development entry-level budget round Bluetooth call watch projects sign formal NDA non-disclosure agreements at the official project kick-off stage. Moreover, buyers gain complete full intellectual property ownership for all custom-built development deliverables once full order payment settlement completes in full.

Specifically, transferred IP assets include exclusive structural slim round chassis drawings, Bluetooth call & light-sport tracking firmware logic, basic PPG vital sensor algorithm parameters and fully customized wellness APP source code files.

Consequently, complete full IP handover helps brands build distinct cost-competitive mass-market differentiation inside the global budget Bluetooth call smart watch wholesale sector.

VOSITONE Smart Watch General Technical Specifications

Product Dimensions & Weight

All measurements derive from VOSITONE Lab testing data. To begin with, the watch boasts an ultra-slim profile, measuring precisely 10.1mm at its thinnest point (measured from phone surface to shell, excluding sensor area). Furthermore, its lightweight construction weighs merely 28g without the strap. However, it's important to note that final product weight may vary slightly. This variation occurs primarily because of different configurations. Additionally, manufacturing processes significantly affect final measurements. Moreover, different measurement methods may yield slightly different results.

Product Visual Representation

While product images and screen contents are shown for illustrative purposes, several important considerations apply. First and foremost, actual product appearance may differ in terms of color, size, and finish. Similarly, screen displays may vary regarding backgrounds, UI elements, and images. Most importantly, all watch face designs represent original artistic creations. Consequently, full copyright belongs exclusively to VOSITONE.

Health Monitoring Features

Heart Rate Accuracy

Lab tests demonstrate exceptional performance. Specifically, accuracy exceeds 97% at 10bpm. The testing covered numerous scenarios including, but not limited to, sedentary activities like sitting and reading, as well as various exercises such as treadmill use, running, walking, and cycling. Nevertheless, actual accuracy may vary due to several factors. Primarily, individual physiological differences play a role. Additionally, usage habits and patterns affect results. Finally, environmental conditions can influence measurements.

Blood Oxygen Monitoring

SpO2 measurements effectively track oxygen saturation levels. Essentially, this measures the percentage of oxygen-carrying hemoglobin in the blood. The system provides intermittent periodic readings rather than continuous monitoring. For optimal results, users should wear the watch snugly and properly. Moreover, keeping the arm steady during measurements improves accuracy. However, multiple factors can affect readings, including low blood perfusion, arm hair, tattoos, improper positioning, and cold temperatures.

Key operational notes include:

• Users must first enable automatic detection in the app
• When oxygen levels drop below the set threshold, the watch provides vibration alerts
• However, these alerts remain disabled during sleep periods

Medical Disclaimer

This product serves exclusively for health management purposes. Importantly, it is not classified as a medical device. All provided data serves merely for reference. Specifically, the information is not intended for medical diagnosis. Therefore, it should never serve as a basis for treatment decisions. For any medical concerns, users should always consult qualified healthcare professionals.

GPS Functionality(If Applicable)

The watch offers robust positioning features. In particular, it supports detailed GPS tracking through the companion app. Laboratory tests have thoroughly validated this performance. However, real-world performance depends on several factors. Environmental conditions represent a primary consideration. Similarly, individual usage habits affect results. Finally, signal interference can impact accuracy.

Water Resistance

The watch meets specific water protection standards. Specifically, it carries a 3ATM rating (30m per ISO 22810:2010). Accordingly, it's suitable for pool and shallow water activities. However, important restrictions apply. The device is not suitable for diving or snorkeling. Users should also avoid high-pressure water exposure. Furthermore, metal and leather straps lack waterproofing.

Critical notes regarding water resistance:

• Protection degrades gradually over time
• Therefore, users should consider alternative straps for swimming
• Additionally, regular inspection of seals is recommended

Charging & Battery Performance

Charging Requirements

Laboratory testing established these specifications at 25°C with 45-80% relative humidity. The device requires a minimum 5V/1A charger. Moreover, it performs best with original charging accessories. However, actual performance may vary due to several factors. Product differences represent one consideration. Similarly, usage patterns affect charging efficiency. Finally, environmental conditions play a role.

Battery Life Estimates

The typical usage scenario includes:

• 120 minutes of Bluetooth calls weekly
• 120 minutes of music playback weekly
• Continuous heart rate monitoring
• 90 minutes of GPS workouts weekly
• Daily notifications
• 200 screen activations daily

Notably, standalone GPS mode operates with separate runtime. Ultimately, actual battery life depends entirely on individual usage patterns and conditions.

System Requirements

The watch requires minimum supported versions:

• Android 8.0 or higher
• iOS 9.0 or higher
  Before purchasing, users should carefully verify their device's compatibility.

*Important Health Notice*

All health-related features serve specific purposes. They are designed exclusively for wellness tracking. While they provide valuable personal health insights, they are not intended for medical diagnosis. Consequently, they should never be used for treatment purposes. For any medical concerns, users must consult qualified healthcare professionals.

All specifications derive from VOSITONE Lab controlled testing. However, real-world performance may vary significantly based on usage conditions and individual factors.