Feature: 1. MULTIPLE FUNCTIONS: This smart ring has multiple functions, allowing you to monitor your sleep, temperature, steps, and other body data at any time, allowing you to observe your health at any time. 2. DURABLE MATERIAL: This smart ring is made of excellent stainless steel and zirconia ceramic, which combines fashion and durability, bringing you a comfortable and lightweight wearing experience. 3. WIRELESS CHARGING: This health ring is wireless charging design, simply connect the base to the charging cable and place it on the table, and can be placed on the base for charging or storage. 4. SLEEP MONITORING: This smart monitoring ring can also detect your sleep time and sleep status, help you maintain a healthy and good sleep habit, and take necessary actions when needed. 5. APPLICABLE SCENES: This sleep ring is beautiful and elegant, suitable for daily wear or any holiday, such as birthdays, anniversaries, Thanksgiving, Valentine Day, etc., which is also a perfect gift. Specification: Item Type: Smart Ring Material: Stainless Steel, Ceramic, Electronic Components Ring Battery Type: Lithium Battery (built in) Ring Battery Capacity: 18mAh Ring Battery Life: About 7 Days Ring Charging Time: 45 Minutes . Package List: 1 x Smart Ring 1 x Wireless Charging Base 1 x Charging Cable 1 x User Manual