Porodo Wearable Smart Ring Size 11 with Touch Function, Anti-Bacterial Stainless Steel, Lithium Polymer, 4.5g, 16mAhFeatures:Size: 11-20.7mmSensor: Heart RateSpecial Feature: Health MonitoringBattery Capacity : 16mAh Battery Type: Lithium PolymerApp Name: AIZO RINGCompatibility : OS Android 5.0+, iOS9.0+Usage Time : 4-6 DaysWeight : 4.5gStandby Time : 25 DaysMore about this:Sport Modes : Walking, Running, RidingOperating Temperature : -20ºC to 50ºCCharging Temperature : 0ºC to 40 ºCStorage Temperature : -30ºC to 70 ºCWorking Humidity : 10 % -90 % RH(Non-Condensation)Certifications : FCC, CE, ROHS, REACH, SRRC, MSDS, UN38.3The Porodo Wearable Smart Ring Size 11 with Touch Function is a modern device that fits perfectly with your everyday routine. This smart ring is advanced. It monitors your body temperature and heart rate in real-time. It provides full health data. It is a dependable partner for your busy lifestyle, offering up to 5 days of continuous use thanks to its remarkable battery life. You can easily track your activity and fitness progress. This is thanks to the ring's sports mode and improved activity tracking. This fashionable and useful smart ring comes in a size range of 11-20.7mm, making it easy for you to stay on top of your health goals. For ideal health and wellness, the Porodo Wearable Smart Ring is the ideal companion, whether you're at work or at the gym.