Feature: 1. EXERCISE TRACKING: APP provides dozens of exercises, which can be used both indoors and outdoors. Simply wear the ring to exercise and record data such as steps, distance, calories and pace. You can also view map path tracking and detailed exercise data to help users gain a deeper understanding of their exercise and break through the exercise limit. 2. EXTREMELY LIGHTWEIGHT: Adopts extremely light weight design, differentiating it from other smart wearable products. Help you get accurate health information while enjoying easy and comfortable wearing process. 3. MULTIPLE SLEEP ANALYSIS: The smart ring provides rich and diverse sleep analysis functions, including data on sleep efficiency, sleep latency, sleep timing, etc., helping users better understand their sleep status and optimize sleep quality. 4. PHONE APPLICATION, EASY VIEWING: Users can easily view the health data of the smart ring through the mobile application without paying any subscription fee, supporting for Android 5.0 and for iOS 10.0 and above systems. 5. MINIMALISTIC DESIGN: The smart ring has a simple and stylish appearance, combining fashionable simplicity and elegance, which is both practical and aesthetically pleasing. 6. TITANIUM ALLOY MATERIAL: Made of skin friendly, high strength titanium alloy, and well made, durable and can be used for a long time. Specification: Item Type: Smart Ring Material: Titanium Alloy Weight: Approx. 103g / 3.6oz Ring Battery: Lithium Battery, Ring Battery Capacity: 20mah (Built In) Ring Battery Life: Around 4-6 Days Ring Charging Time: 60 Minutes Color: Gold APP: For Nova Smart Ring. Package List: 1 x Smart Ring1 x Instruction Manual1 x Charging Cable1 x Base