clothdank R02 Smart Ring - 5ATM 17mAh Black

Specification: Origin: Mainland China Color: Black Main Functions: Step Count, Distance, Calorie Count, Heart Rate, Blood Oxygen Saturation, Pressure, Sleep Tracking, Multi-Exercise Mode Chip Manufacturer: for Lianrui Micro Chip: RF03 App: Qring Compatible Systems: for Android5.1 or Above, for IOS8.0 or Above Flash Memory: Ram 208kb Rom 512kb Bt: 5.0 -Compatible Low Power Chip Acceleration Sensor: for Siltron STK8321 Heart Rate: Vcare VC30f Battery Type: Polymer Lithium Ion Capacity: 17mah Charging Mode: Magnetic Charging Waterproof Rating: 5ATM Charging Time: About 1 Hour Battery Life: 5-7 Days, Standby For 15 Days Appearance Material: Stainless Steel Size Diameter (mm) : No.9 18.9mm/0.74in Weight: 4.4g Packing Size: 75*75*43mm/2.93*2.93*1.68in Gross Weight: 70g Note: Please purchase according to the size of the bracelet! Please remove the ring after bathing and clean it to avoid skin damage caused by the residue of toiletries inside the ring. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package includes: 1*R02 Smart Ring