[A healthy leap ahead.]Take an Heart rate monitoring anytime,anywhere.Check your real-time b-temperature.Measure your b-oxyg level with a revolutionary sensor and app.Cnbro Smartring puts more health insights in sight and allow you to take on demand readings of your health management data as well as background readings, day and night. [Dream machine.]Adequate sleep is very important for health.The app doesn’t just keep track of your sleep. It also helps you create a schedule and a bedtime routine so you can meet your sleep goals. When you fall asleep wearing smartring, the ring will automatically record your Deep Sleep or Light Sleep，Wake Time. You can view these data directly on the APP, adjust your routine, and develop good sleep habits.How refreshing. [So much to move you.]cnBro Smartring is your coach, community and diary. Just like you, the Fitness Features is always getting better. With updates that bring advanced features straight to cnrbo smartring, it will have you running like clockwork.Now you can try to set an exercise goal for yourself, and monitor your body data in real time during the process, such as heart rate zone, steps, calorie consumption, distance. [Charging for 0.5H, use for 3~5 days]It adopts an ultra-low power consumption main control chip, which greatly improves the battery life of the ring. When you're on the second day of a backpacking trip, The movement is about to reach its end, the last thing you want to think about is running out of battery. With longer battery life than ever, you can take on almost anything and have energy to spare. [A perfect gift]CnBro Smartring is a perfect gift that you can give to your family or friends on any important day. cnBro Smartring pays attention to the user's health and adds a sense of fashion to the user, while also highlighting your unique taste.**Scroll down for more specs ●Take it all in. Get it all done.
- Step/distance/calorie calculation
- Heart rate
- B-Oxy saturation
- Temperature monitoring
- Sleep tracking
- Stress index monitoring
- Multi-sports mode
- Remote control photography

●FIVE size types(inch)

○size #8:
Inner circumference：2.26in
○size #9:
Inner circumference：2.36in
○size #10:
Inner circumference：2.47in
○size #11:
Inner circumference：2.57in
○size #12:
Inner circumference：2.67in

●The most durable cnBro Smart Ring ever built.
○Crack Resistant/Dust Resistant/Water Resistant
●Charges in no time.
○15mAh About 0.5H Charging time and 3~5 days of use, 7 days of standby

◎SPECIFICATION:
System Requirements：Android 6.0 and above, iOS 12.0 and above, Bluetooth 5.2 support

◎WHAT'S IN THE BOX
- 1*Ring
- 1*Ring Box
- 1*User Manual
- 1*Magnetic charger
★Any questions,please kindly contact us,we would always offer best solution to you.