Support system: Android 4.4, ios 8.0 above</br>Standby time: 3-5 days using time, standby 7 days</br>Date storage: 7 days of detail dates, 23 days of summary</br>Control: Touch control, mobile APP control</br>Language: Multi-lang Chinese/English/Russian//German/Italy/Japanese/French/Portugal/Korean/Spain etc</br></br>Product Description</br></br>Specification:<br> Chip: CH-NRF21822<br> BP heart rate sensor: PAH8001EI<br> Six-axis sensor: MPU6500<br> Vibrate: Mute/ vibrate<br> Waterproof: IP67<br> New functions: Dynamic BP heart rate oxygen test<br> Screen size: 0.49 inch<br> Screen type: OLED<br> Contection: Bluetooth 4.0 BLE<br> Battery: Polymer lithium battery<br> Battery capacity: 70MAH<br> Charging way: 2 points charge<br> Charging time: 1.5H<br> Size: L*W*H= 51.3*23.8*13.1<br> Strap size: L*W = 17.0*10<br> Material: Alloy<br> Color: Black, Silver, Gold<br><br> Main functions: <br> BP test, Step counter, calorie and distance, stopwatch, sleep monitoring,Call reminder, alarm clock reminder reminds, drinking the shake it, and falls photos Social sharing (micro-credit, QQ, Facebook, Twitter) and other (customizable APP)<br><br> Package list:<br> 1x Smart wristand<br> 1x USB cable<br> 1x User manual<br></br><br/>http://www.amazon.com/gp/product/B01N4MKZNZ