Feature: 1. MONITORING HEALTH: Smart health ring is fit for Android 5.0, fit for IOS 10.0 and above, adopts advanced smart technology to help you monitor your health data in real time and get a clearer picture of the factors affecting your health and exercise capacity. 2. SLEEP MONITORING: Smart ring health tracker rates sleep quality based on the ratio of REM sleep, light sleep and deep sleep throughout the sleep cycle and gives you appropriate recommendations. 3. IP68 WATERPROOF: Smart health ring is IP68 rated, waterproof, sweatproof, and dustproof, providing reliable performance during swimming, showering, and other water related activities. 4. FITNESS RING: Achieve your fitness goals with this fitness ring. It accurately records the distance you've run, calories burned, and active time, so you will know your progress throughout the day. 5. GESTURE SWING PHOTO: The portable and beautiful smart ring can remotely control the photo, so you can easily capture beautiful moments anytime and anywhere. Made of a mix of aluminium alloy and stainless steel, the battery lasts for 7‑10 days of normal use. Specification: Item Type: Smart Ring Material: Aluminum Alloy, Stainless steel Battery Type: Lithium ion (built in) Battery Capacity: 17.5 mAh Waterproof Level: IP68 Application Support: Fit for Android 5.0, fit for IOS 10.0 and above Ring Thickness: Approx. 2.8mm / 0.11in Charging Method: Magnetic charging Operating Temperature: 0-50℃ Storage Capacity: 128 kb ROM, 96 Kb RAM. Package List: 1 x Smart Ring 1 x USB Charging Cable 1 x User Manual