Feature: 1. LONG BATTERY LIFE: The health tracker ring utilizes energy saving technology that ensures continuous monitoring for up to 7 days on a single charge without interruption. APP is compatible with for Android, for iOS, making it easy for you to view your data at any time. 2. MOTION MONITORING: By analyzing the motion data monitoring and other key data, there are various functions, such as body temperature, step counting and so on. Utilizing advanced sensors to record your condition, it helps you keep track of your health at all times. 3. PROMOTE A BETTER LIFE: Record and analyze your health data, whether you are passionate about fitness, or want to effectively manage stress, smart ring can provide you with tailored advice and guidance. 4. WATER RESISTANT AND DUST PREVENTION: This fitness tracker ring offers water resistant and dust prevention, wash your hands, take a bath, swim and other daily water related scenarios to wear at will, and all kinds of sensors to track your health data as usual at any time. 5. STYLISH AND COMFORTABLE: Smart health ring is made of premium stainless steel, sturdy, beautiful and elegant, lightweight design, fashionable and comfortable. It is a meaningful gift choice for any scene or festival, such as birthday, anniversary, thanksgiving, graduation and housewarming party. Specification: Item Type: Smart Health Ring Material: Stainless Steel Color: Black Battery Type: Lithium Battery (Built in) Battery Capacity: 20mAh Battery Life: Approx. 7 Days Charging Time: Approx. 45 Minutes APP: For Smart Health. Package List: 1 x Smart Health Ring1 x Charging Cable 1 x User Manual Note: Manual measurement, please allow some errors.