Description/Features: ensuring continuous health monitoring and activity tracking without frequent charges. Health Monitoring Features: Keep track of with advanced sensors that monitor heart rate, sleep quality, and more, helping you maintain a healthy lifestyle. Versatile Sports Tracking: Track multiple sports activities with precision, whether you are running, swimming, or cycling, making it an ideal companion for any athlete. Convenient Charging Case: Comes with a sleek charging case that not only protects the ring but also ensures it is to go. Specifications: APP:Qring Bluetooth: 5.0 Battery capacity: 17mAh Charging : Magnetic charging Color:Tin Color Specifications:NO.9 Material: Stainless steel Due to different batches, there may be differences in product printed text, which will not affect use Package Contents: 1 x Smart Ring (with Charging Case) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.