Specifications Hign-concerned Chemical:None Waterproof Grade:5ATM Model Number:R10 Display screen:No NFC Support:No Activity Tracked:Activity Tracker,Steps Tracker,Distance Tracker,Calorie Tracker Metrics measured:Heart Rate Monitor,Sleep Monitor,Blood Oxygen Monitor,Body Temperature Monitor,Stress Monitor Item Weight:3.5 Case Material:STEEL Certification:ce,FCC Battery Capacity(mAh):14mAh Key Feature APP:Qring Chipset: RTL8762 ESF Memory:RAM 104KBROM 512 KB BT: BT5.2 Waterproof grade:5ATM Body MaterialStainless steel ring Battery: 14mAh Lithium polymer Charging MethodWireless charging Charging Time: About 1.5 hours Normal Using Time: 5-7 days (depending on personal habits) Standby Time: 10days-15days AuthenticationCE;FCC;RoHS Supported Systems :Android5.1or above, iOS8.0 or above Main Function 1>Daily Activity: Steps, Distance, Calorie Counting 2>Health management: heart rate Monitor, oxygen saturation, sleep tracking, multi-sport mode, stress, heart rate variability 3>Other Functions:Remote Photo, Find Ring, Gesture Control, GamesFemale physiological reminders Firmware language: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Trkiye, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay Package Included: Original Ring x1,Charging adapter x1,Manual x1,Charing Cable x1