R100 SIZE 11 Smart Ring, Support Heart Rate Blood Oxygen Sleep Monitoring Remote Photography About Product: 1. CPU:AB2026B3 2. ROM+RAM:8Mb ROM + 96 Kb RAM 3. Wearing Detection: SAR (Specific Absorption Rate) 4. Heart rate sensor: HX3918 5. Battery Capacity: 26mAh 6. StandbyBattery life:more than 15days 6-8 days 7. Charging time: less than 60min 8. Waterproof: 5ATM 9. Size 11: Dia 20.7mm; Perimeter 64.9mm 10. Charging method: Magnetic charging 11. Compatible system: Android5.1 or above, iOS8.2 or above 12. APP:Da Rings Function: 1. Step count, Calories, Distance 2. Sleep duration:Deep sleep, Light sleep, REM, Awake, Sleep Score & Sleep Proportion 3. Exercise Records :Total sessions, Total calories burned, Total duration 4. Heart rate monitoring,blood oxygen saturation,heart rate variability(HRV) 5. Stress monitoring,female menstrual cycle,remote photography,gesture control Packing list: Smart ring x 1 Charging line x 1 (not include charging case) User manual x 1 COMPATIBLE retail case x 1