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Smart M4 Wristbands Men Women Waterproof Sports Bracelet Phone Bluetooth Heart Rate Monitor Fitness watches For Android IOS Features: High sensitive touched screen, can achieve various operations, information content, step, calories, distance, weather, heart rate and other functions to quickly view, thus opening intelligent life. Made of thermoplastic elastomer, it is more comfortable to wear, double-breasted design, let you exercise without falling off. Recording hearrt rate is nice for knowing your health and exercise status, using reflection. Photoelectric signal detection principle records your heart rate, 24h continuous detection your heart rate. Automatically record the number of step, burn calories. You can choose the exercise program that suits your life rhythm, Nothing is more than sweating after exercise. Sweating can relax yourself, stick to exercise, and make yourself a nicer self. The bracelet automatically detects your sleep and generates a sleep report. When you forget the time, the bracelet will vibrate gently, remid you to get up and wake up. Specifications: - IP67 Waterproof - Charging voltage 5V Current 1A-2.1A Charging time 2 hours- - About standby time 3-5 days - All-day activity tracking: steps, calories burned, mileage, and heart rate. - Smart reminder:call reminder, messaging push, sedentary reminder. - More features: phone search, remote camera shoot, stop watch. - Continuous heart rate monitor:Continuous, automatic heart rate tracking right on your wrist per second. - 0.96'' TFT color touch screen:HD screen, easy to read all fitness data. - Customizable clock faces - Bluetooth 4.0, compatible with Android 4.4 and above system, ios 8.0 and above system. - APP support language: Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, Portuguese, Spanish, Arabic, Korean Package Included: 1 * Smart bracelet 1 * User manual 1 * Charge Cable Note: This is not Xiao Mi Band 4. Smart wristband is not for medical use, please don't buy for check the health(heart problem, blood pressure problem) it's not for professional use.Just can be a reference. FAQ 1. Question :how to charge the watch ? Answer :Take off the watch straps , and dierctly insert it into the usb charging port.(note ,please try both chipset sides ) 2.Question: What's the app name for the watch ? Answer : ''yoho sports'' 3. Question : how to connect with the app ? Answer : download app'' yoho sports'' and turn on your mobile phone bluetooth . and then click device enable the bluetooth with your app . (Note '' don't press find band before you bind with the watch ) 4. Question : how long will the battery life stand ? Answer ''usually one watch fully charge can use 1-2days , if battery comsume too fast , remember to close the notification of whatsapp facebook something like that . 5 Question :what if my watch cannot turn on ? Answer :there are two sides of the chipset ,please make sure you try both sides . if still not work . try to insert into computer usb port for tyr. contact us before you open dispute .thank you Sports Watch Blood Pressure Heart Rate Monitor Message Reminder Bluetooth Waterproof Men And Women Bracelet Children WristUSD 4.80-4.96/pieceMen's Electronic Watch Women's Heart Rate Monitor Bluetooth Waterproof Message Call Reminder Pedometer Kids Watches Android IOSUSD 4.82-4.97/pieceNew ID115 Plus Sports Watch Bluetooth Waterproof Belt Call Message Reminder Heart Rate Fitness Pedometer Men And Women BraceletUSD 4.98/pieceNew ID115 PLUS Color Screen Bracelet Sports Watch Fitness Running Walking Tracker Fashion Children's Watches for Men Women ChildUSD 4.98/pieceColor Screen Men's Electronic Watch Heart Rate Monitoring All Day Health Management Women's Children Watch Digital Alarm ClockUSD 5.00/pieceSmart M4 Wristbands Men Women Waterproof Sports Bracelet Phone Bluetooth Heart Rate Monitor Fitness Wristband For Android IOSUSD 4.73-4.88/pieceBluetooth Wearable Device Intelligent Sport Watch Blood Pressure Health Monitoring Digital Watch Men Women Fitness SmartwatchesUSD 4.99/pieceSmart M4 Wristbands Men Women Waterproof Sports Bracelet Phone Bluetooth Heart Rate Monitor Fitness watches For Android IOSUSD 4.51-4.99/piece