Attention: Welcome to my shop We ship the product from China, the delivery time is 7-14 daysModelZeblaze GTRBluetooth VersionBluetooth 5.1ChipGoodix GR5515Water resistant30 metersScreen Size1.3 inchScreen type2.5D Glass + IPS Full Round Color Touch ScreenCompatible OSAndroid & iOSCompatabilityAndroid 4.4 / iOS 9.0 and above systemSensorHeart-rate sensor, Proximity sensor, Accelerometer.Type of batteryLithium polymer battery Battery Capacty:180 mAhStandby time30 days (Power-saving Scenario); 18 days (Typical Usage Scenario)Charging timeAbout 1.5 hoursStandout FeaturesAll-day Heart Rate Monitoring (Abnormal Heart Rate Alert), Blood Pressure Monitoring, 10 Goal-Based Exercises, Female Cycle Tracker, Sleep Quality Monitoring, Steps Tracking, Calorie Burn Tracking, Daily Steps Goal, Real-time Pace & Distance, Goal Celebrations, Reminders To Move, Smartphone Notifications, One-click Reject/Mute, Weather Forecast, CountDown & Stopwatch, Alarm Clock, Multi-watch Faces, Find Phone, Turn Wrist Detection, Music Control, Shake Take Photo.Case materialMetal BodyBezel material2.5D GlassBand materialSilica GelDial size45*45*11.6mmProduct weight51 gPackage weight210 gPackage size (L x W x H)145*90*28 mmPackage contents1 x GTR, 1 xStrap, 1 x Cable, 1 x User Manual (English, Deutsch, Espaol, Portugus, Franais, Japanese .)