Waterproof Smart Ring Fitness Tracker

Condition: Brand new in box (w/ charging cable)Color: SilverSize: #9 (circumference: 59.5mm; inner diameter: 19mm) Operating system: Android Wear 2.9【All-in-One Fitness Tracker】Track your health and fitness, featuring advanced tracking for heart rate, blood oxygen levels, steps, calories burned, sleep quality, and more.【Unnoticeable Wear with Slim Bezel Design】: Features an ultra-slim bezel, just 6.5mm wide—15% narrower than other smart rings on the market.【Family Care】 Allows you to add family members as friends, enabling you to monitor their health data at any time, such as step count, blood oxygen levels, sleep patterns, and heart rate.【Advanced Sleep Tracker】: In-depth reports on deep sleep, light sleep, REM phases, and the frequency of awakenings.【No Subscription Needed】 Connects to phone via Bluetooth. The Health Tracker monitors your health and fitness data at any time & anywhere allowing you to manage your well-being through the app without any extra subscription costs outstanding for everyday use. superior materials and excellent craftsmanship ensure long-lasting durability.