JTLB Smart Health Ring - 5ATM Sleep Monitoring

Specification: Item Type: Smart Health Ring Material: Stainless Steel Ring Battery Capacity: 16mAh Li Ion Battery (Shipped with Built in Battery) Charging Case Battery Type: Li Ion Battery (Shipped with Built in Battery) Charging Case Battery Capacity: 300mAh Color: Black How to Use: Download the app first, then connect to the ring, it will automatically turn on when fully charged. packing list: 1 x Smart Ring 1 x User Manual 1 x Ring Charging Cable 1 x Charging Cable for Charging Case 1 x Charging Case