!TERBARU! Electronics Smart Ring Ceramic Smart Ring Health Activity

Compatibility : All Compatible Language : English Function : sleep tracker Brand Name : TWISTER.CK Origin : Mainland China Certification : NONE Description: Name: Smart Ring Working life 7 days Standby life 60 days Shutdown life 180 days Power requirements Shutdown power: 10uA Standby power: 50uA Power display error lt;3% Charging time (h) 1 0.5 Mean time to failure (MTBF)1 year Packing list: Ring x 1 Charging case x 1 Charging cable x 1 Instruction manual x 1