1. Daily activities: steps, distance, calorie counting 2. Health management: heart rate, oxygen saturation, HRV heart rate variability stress, sleep tracking, skin temperature measurement 3. Indicator: message reminder, charging status 4. Touch Function: Music Control, Short Video Control 5. Other Functions: Remote Control Photo, Female Physiology Reminder, Multi-Sport Mode Software feature Steps, sleep, heart rate, workout data logging Health monitoring, pressure, blood oxygen measurement Multiple exercise modes, photo taking, message reminders Supported languages: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Turkish, 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 Chipset: RTL8762 ESF APP: QRing Compatible System: For Android 5.1 and above, IOS 8.0 and above FLASH memory: RAM104KB FLASH 512KB BT: 5.2 Battery: 15mAh (18mAh for #10 and above) Waterproof: 5ATM Colour:black Material:Stainless steel Package Contents: 1 * smart ring 1 * charging case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.