Attention: Welcome to my shop We ship the product from China, the delivery time is 7-14 days ModelZeblaze GTR Bluetooth VersionBluetooth 5.1 ChipGoodix GR5515 Water resistant30 meters Screen Size1.3 inch Screen type2.5D Glass + IPS Full Round Color Touch Screen Compatible OSAndroid & iOS CompatabilityAndroid 4.4 / iOS 9.0 and above system SensorHeart-rate sensor, Proximity sensor, Accelerometer. Type of batteryLithium polymer battery Battery Capacty:180 mAh Standby time30 days (Power-saving Scenario); 18 days (Typical Usage Scenario) Charging timeAbout 1.5 hours Standout 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 Body Bezel material2.5D Glass Band materialSilica Gel Dial size45*45*11.6mm Product weight51 g Package weight210 g Interface: magnetic Wearing method: wrist strap Compatible system: fully compatible Communication function: not supported Additional functions: step counting, mobile positioning, monitoring, smart reminders, remote control selfies, health monitoring, information push, sports tracking, sleep analysis Wireless distance: 5m (inclusive) -10m (inclusive) Operation mode: touch + button Product size: 45*45*11.6mm Screen resolution: 240*240 Wristband material: silicone Product weight: 210 (g) Strap style: sporty Compatible platform: ANDROID Package contents1 x GTR, 1 xStrap, 1 x Cable, 1 x User Manual (English, Deutsch, Espaol, Portugus, Franais, Japanese .)