1.0.96" OLED big screen. You can check anything. You can check the date via vertical layout or horizontal layout for your choose. 2.IP67 waterproof: Can play a protective effect on soaking hand washing, rain, effectively prevent sweat and other corrosion. 3.Built-in 65mAh battery, normal use time about 10 days or so, heart rate has been opened about 5 days 4.Call & SMS & social message alert: Message smart remind, remind you anytime, anywhere. 5.Real-time heart rate monitoring: With a built-in motion sensor, real-time measurement of heart rate to adjust the intensity of exercise. 6.Tracking daily activities data: Record steps, distance, calories, Check daily activities data anytime. 7.USB charge: No need data cable anymore, convenient, fast charging. 8.APP name: Search and download "VeryFitPro” from the Apple Store or Android App store. 9.BT4.0, Support IOS 7.1 Android4.4 & Above system equipment 10.More functions: Remote camera, Connect Apple HealthKit / Google Fit, Share health data, Anti-lost, Sports target reminder, Find phone, Auto tracking sleep& alarm clock, Sendentary alert Model NOID115 PLUS Heart rate smart band APP NAMEVeryFitPro APP OSAndroid 4.4 and above,iOS 7.1 and above Functionspedometer,distance,calorie,sleeping monitor,multiple sports modes,alarm clock,remote camera control,sedentary alert,in-coming call alert,heart rate monitor Multiple sports 15 sorts of sports modes:running,walking,cycling,swimming,yoga,hiking,climbing,rope skipping,basketball,badminton,tennis,football,treadmill,SPINNING,dancing CPUNordic nRF52832-QFAA SensorKIONIX KX022-1020 HR SensorSilicon labs Si1142 BT4.0 waterproof and dustproofLife waterproof(sweatproof,dustproof) Screen size0.96 Screen typeOLED materialupper casing:PC,strap:TPE Dimensionsuits for wrist size: 5.4 inch - 7.6 inch Battery typeLi Battery Battery capacity65mAh Standby time5-10 days Charging methodUSB charging Charging time 1-2 hours