Model Number T37 Band Material Silicone Feature 2.02" AMOLED display, Always-on Display, Super thin bezel, Compass, Transparent UI split screen, BT calling, Voice assistant, 3.8V fast charge battery, Red light SpO2, Sport heartrate, HR alert, Password lock, Namecard QR code Game play, Alipay(option) Operation Systerm Android 9.0+, IOS12.0+ Function Rotating button, Vibrate/sound adjust , 4menu modes, Power saving mode, Quick-button set, Torch, Stress/Breath train/blood pressure/MET, Cloud face/sport modes, Calculator, Message Storage(delete records),Find the phone, Find watch, Brightness adjustment, Stopwatch, Timer, Torch light, Music control,Fitness, Sleep monitor, Notifications, Camera Remote,Clock, Non-disturb, Sedentary,Weather, 12/24time Model Name AMOLED Smart Watch T37 Screen Size 2.02Amoled, Full touch, 410x494 Chipset Sifli SF551 Battery 280mAh 3.8v Standby time 30days APP Microfit OEM/ODM Service Support Certificate CE, ROHS