1、FITNESS TRACKER RING: By analyzing key data such as exercise data and utilizing advanced sensors to record your condition, it helps you stay on top of your health at all times. 2、FASHION AND TECHNOLOGY COMBINED It is elegantly designed, lightweight, stylish and comfortable. Energy saving technology ensures that it can work continuously for 7 days on a single charge, and the APP is compatible with for Android, so it is convenient for you to check your data at any time. 3、MULTIFUNCTIONAL: The smart ring has a variety of functions, such as monitoring body temperature, sleep, step counting, etc., which allows you to keep an eye on your physical health data. 4、HAPPY LIFE: Whether you're passionate about fitness, focused on sleep, or looking to effectively manage stress, this smart ring provides you with effective advice and guidance. 5、WATER RESISTANT AND DUST PROOF: You can wear it freely in all kinds of daily water related scenarios such as washing hands, bathing, swimming and so on. Various sensors record your health data as usual at any time. Item Type: Smart Ring Material: Stainless Steel Built In Battery: Li Battery 20mah Ring Battery Life: About 7 Days Ring Charging Time: About 45 Minutes APP: For Smart Health Applicable Size: US Size 7 Applicable Finger Circumference: 54.3mm / 2.14in Inner Diameter: 17.3mm / 0.68in 1 x Smart Ring 1 x USB Cable 1 x Instruction Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store