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Model: BY21S bluetooth : BLE 4.1 Ram: 64K Rom: 512K Chipset: nrf52832 Resolution: 160*80 Battery Capacity: 80mAh Charging Time: 1 Hour Working Time: 5-7 Days Standby Time: 10 Days Strap Color: Black, Blue, Brown Display: 0.96 inch TFT Color Screen Compatibility: Android 4.2 and IOS 8.0 or Above Item Size: 252x19x10mm(Total Length x Host Length x Thickness) Waterproof: IP67 (Hand washing,rain,Swimming and other daily life in the water can be normal operation.Do not worry about the delay of data collection.) APP Language: Simplified Chinese, Traditional Chinese, English, Japanese, Spanish, German, Italian, French, Russian, etc. Main Functions: Heart Rate, Blood Pressure, Blood Oxygen Monitoring, Sleep Monitor, Pedometer, Distance Analysis, Calories, Hand Raise Light Up, Sedentary Reminder, IP67 Waterproof, Remote Camera, Messages, Calls Reminder, Find the Phone,etc.   1.Stylish & 0.96 inch TFT Color Screen Design: Fitness tracker with color screen,you can see the screen clearly in the sun or in the dark.Cool design and double-color Strap suitable for everyone. 2. Heart Rate & Sleep Monitor: Check your heart rate automatically to help you do exercise scientifically.Sleep Monitor automatically tracks your sleep duration and sleep quality. 3. Notification Remind: Intelligent notification be clear at a glance, convenient and timely access to telephone, SMS, and all kinds of social information. You will never miss a call or message.Sedentary reminder, remind you to leave the seat for just the right amount of exercise. 4. Unique Design: Featuring a sleek, modern look, versatility, broad compatibility, lightweight, adjustable wrist strap. It can be used as fitness tracker, health tracker. 5. IP67 Waterproof: You can wear it when washing hands,taking bath and swimming but not more than 3 meter deep. 6. Wide Compatibility: Supports bluetooth 4.1, compatible IOS8.0 and Android4.2 or above systems.    1x BY21S Smart Bracelet 1x Charging Cable 1x User Manual










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