cnBro TK9-SMARTRING - #12(Inner circ2.65in)

●🌟Take it all in. Get it all done.🌟 - 💓Heart Rate Monitoring - 🩺Sp-O₂ Monitoring - 🛏️Sleep Tracking - ⚽Fitness Tracking：🚶Step/🏃distance/🔥calorie calculation - 💡Gesture control: Effortless control at your fingertips! 📸Take photos remotely, flip through e-books with a wave, and switch 📱Short-videos instantly—no touch required! ●🔘THREE size types(inch) 📏○size #10:Inner circumference：2.45 in 📏○size #11:Inner circumference：2.54 in 📏○size #12:Inner circumference：2.65 in 🔨●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*User Manual - 1*Magnetic charger ★Any questions,please kindly contact us,we would always offer best solution to you.