Heayzoki Smart Ring - 13

Specification: Item Type: Smart Ring Material: Stainless Steel Color: Gold Ring Battery Type: Lithium Battery (With Built In Battery Delivery) Ring Battery Capacity: 20mah Ring Battery Life: About 7 Days Ring Charging Time: About 45 Minutes App: for Smart Health How to Use: Please scan the QR code to download the APP before use, and operate according to the instructions. Boot mode: self start with full charge. Package List: 1 x Smart Ring 1 x Charging Cable 1 x User Manual Note: Manual measurement please allow some error.