1.43-inch HD Display: Enjoy a clear and vibrant viewing experience with the high-definition AMOLED screen 400mAh Large Battery: Equipped with a big battery to ensure long-lasting performance and less frequent charging Multiple Sports Modes: Tailor your workout tracking with various sports modes to accurately measure your activity Heart Rate and Blood Oxygen Monitor: Stay on top of your health with continuous heart rate and blood oxygen monitoring Bluetooth 5.0 Call: Make and receive calls directly from your wrist, ensuring you're always connected Specifications: Bluetooth VersionBLE 5.0Main Control ChipRealtek8763EWE-VPMemoryFlash128MBScreen Size1.43"Screen Resolution466*466Heart Rate3605Speaker0916Battery Capacity400mAhStandby TimeAbout 30daysWorking Time5-10daysMotorBuilt-in, vibrating reminderFunction1.43-inch AMOLED screenDetachable 22mm strap StandardMultiple watch faces pushing, Customized watch facesBluetooth calling/BT music(Superior clear audio-like sound effects), WeatherHeart rate detection/Blood pressure detection/Blood oxygen detection/Wole-day heart rate monitorTimer, Pedometer, Calorie Consumption, Distance Calculation, Heart rate, Blood pressure, Blood oxygen, Sleep time /quality, On & Off display, Multiple sport modesSleep detection (Sleep time, Sleep quality)Calls to remind, SMS Reminder, Third-party messaging reminder Multilingual push, Clock alarm, Remote Camera, Sedentary reminderEnglish, Chinese, Japanese, German, French, Spanish, Arabic, Russian, Ukrainian, Russian, Portuguese400mAh big battery, super long standby time, Bright screen under sunshineSynchronous data to APK/APPAPP/APKDownload “FitCloudPro" from the Android market, Google Play or iP storeScan the QR code and download "FitCloudPro"OSAndroid system 4.4 version or above; iOS system 8.0 version or above; Support Bluetooth with 5.0 versionPackage included: 1 x Smart Watch 1 x Charging Cable 1 x English and Chinese Manual Other items not included