Removable main tracker design allows for effortless transition between dynamic dual-color strap combos. Battery life : Up to 14 days, Battery capacity: 100 mAh On-demand daytime spot checks and continuous sleep monitoring of blood oxygen saturation (Sp02) quickly and accurately highlight potential health issues. Access key mobile features directly from your wrist â includes music, camera shutter controls, call - message notifications and many more. Asides from OTA Software Updates, the OnePlus Health App analyzes health data, provides insights and advice on your personal health. OnePlus Health App for iOS platform now available.