K5 IP68 Waterproof Colorful OLED Smart Band Blood Pressure Heart Rate Monitor Smart Watch Bracelet Blood oxygen Wristband sport Smart Wrist Watch Bracelet For Huawei Xiaomi Samsung iPhone Smart Watch 4 Colors (Black) SPEEDmall

? 1.0 inch TFT color screen.
? Metal body, 20mm double color silicone strap.
? IP68 waterproof.
? Magnetic charging.
? Real-time heart rate, blood oxygen, blood pressure.
? Multiple sports modes: walking, running, Cycling mode, Skip, Push-up, swimming.
? 200 mAh battery, standby 20 days.
? Push information(Supports all languages), Call Reminder, Task Reminder, sleep monitoring, alarm clock, stopwatch, Anti-lost.
? Android system 4.5 or above; iOS system 7.5 or above; bluetooth 4.0.
? APP Languages: English, German, Japanese, Russian, French, Italian, Korean, Portuguese, Spanish, Chinese.

System requirements :Android system 4.5 version or above ;iOS system 7.5 version or above ;Support  bluetooth with 4.0 version;    
Bluetooth version :BLE 4.0    
Master chip :NRF52832    
Memory :64K(Flash 512K)    
Screen display :1.0 inch  TFT    
Solution: 128*96    
Battery capacity : 200mAh    
Standby time :About 20days    
Working hours :3-5days    
Motor : Built in, vibratng reminder     
Waterproof rating :IP68    
Sensor: Gravity sensor    
Machine size:41*10*47(mm)    
Changeable strap