Specifications Hign-concerned Chemical:None Waterproof Grade:5ATM Model Number:R08 Display screen:No NFC Support:No Function:Message Reminder Activity Tracked:Steps Tracker,Distance Tracker,Calorie Tracker Metrics measured:Heart Rate Monitor,Sleep Monitor,Blood Oxygen Monitor Case Material:STEEL Certification:ce,FCC Brand Name:KGG Battery Capacity(mAh):15mAh New R08 Smart Ring Men Women Charging Case Skin Temperature Health Monitor 5ATM Waterproof Music Video Control Rings Finger Basic parameters Ring sizemmNo.7 17.5mm, No.8 18.3mm, No.9 19.1, No.10 20mm, No.11 20.8mm, No.12 21.6mm. No.13 22.4mm. Weight3.7g (No.10) Color black. gold. ChipsetRealtek Chipset ModelRTL8762 ESF App nameQRing Compatible systemAndroid5.1or above, iOS8.0 or above FLASH memoryRAM104KB FLASH 512KB LCD TypeNo Screen sizeNo Resolution ratioNo Digital crown (encoder)No TouchYes BT5.2 BLE (Bluetooth Low Energy) Bluetooth callNo WIFINo NFCNo SensorST LIS2DOCTR GyroscopeNo Heart Rate SensorVcare VC30F-S GPSNo Battery typeLithium polymer Capacity15mAh(18mAh for size 10 and above) Charging modeMagnetic charging compartment Dust Proof & Waterproof Level5ATM Charging timeAbout 1.5H Life time5-7 days of use and 15 days of standby Product languageNo Strap sizeNo Product Materialstainless steel Major function: 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, Zanjian 5>Other Functions: Remote Control Photo, Female Physiology Reminder, Multi-Sport Mode. QRing App software features : Step count, sleep monitoring, heart rate tracking, exercise data records Health monitoring, pressure, blood oxygen measurement Multiple sports modes, photography, and message reminders APP Supported languages: 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 Packing List: 1* Smart ring with Charging Case 1* Charging Cable 1* Manual 1*box Detailed Pictures: