V5 Rotation Decompression Health Monitoring Multi-function Smart Ring,Magnetic Cable Charging - Black or Size 12 Rotation decompression¡¿Smart decompression ring,the chain is rotatable to decompress,bringing more fun Smart chips¡¿With powerful computing power and floating-point arithmetic technology,it achieves faster running speed,higher security,and longer transmission distance Sleep monitoring¡¿When you fall asleep,the ring automatically monitors your sleep quality and generates a sleep report to help you develop good sleep habits Heart rate monitoring¡¿Through the combination of photoelectric sensors,accelerometers,optical heart rate sensors,optical blood oxygen sensors,and multiple sensors run synchronously Exercise monitoring¡¿You can set a daily exercise goal,5000-10000 steps,record steps,kilometers and calories at any time,apply different sports modes and open the exercise track on the APP at the same time,record the movement track of each time IP68 waterproof¡¿There is no need to take off in washing,showering,swimming and other wading scenes,and it is not affected by sweat,and the physical condition under sleep and activity is continuously monitored Specifications: Material: Stainless Steel Case Size: 10 (Inner Diameter 19.8mm), 11 (Inner Diameter 20.6mm), 12 (Inner Diameter 21.5mm), 13 (Inner Diameter 22.4mm) Chip: AB2026B3 Memory (ROMandRAM): Max Frequency 120M,RAM 64KB Gravity Sensor: 3-Axis Step Sensor SC7A20H Bluetooth Version: 5.2 Mobile App with GPS: Yes Heart Rate Sensor: 3918 Battery Type: Polymer Lithium Battery Operating Temperature Range: 0-50¡æ Battery Capacity: 20mAh Charging Time: 1 Hour Standby Time: 10-15 Days Usage Time: 3-5 Days Charging: Magnetic Charging Compatibility: Supports Android 5.0 or above for Apple iOS 10.0 or later App Language Support: Multiple Languages OTA Support: Supports FOTA Upgrades Application: Da Rings Package included: 1 x Smart Ring 1 x Charging Cable 1 x English User Manual