Parameter: Bluetooth version: BLE 5.0 Main control chip: Realtek8762DK Memory: Flash 128MB Screen resolution: 360 * 360 Heart rate: 3605 Horn: 0916 Battery capacity: 400mAh Motor: Built in, vibratng reminder screen:1.39 inch IPS screen Easy to replace strap, 22mm strap Standard APP:Dafit System requireAdultts: Android system 4.4 version or above; iOS system 8.0 version or above ; Support bluetooth with 5.0 version; Watch language: English, Chinese, Japanese, GerAdult, French, Spanish, Arabic, Russian, Ukraine, Portugal Feature Multiple watch faces pushing,Customized watch faces Bluetooth calling/BT music(Superior clear audio like sound effect),Weather Heart rate detection/Blood pressure detection/Blood oxygen detection/Wole-day heart rate monitor Timer ,Pedometer,Calorie Consumption,Distance Calculation,Heart rate,Blood pressure,Blood oxygen,Sleep time /quality,On Off dispalyMultiple sport modes Sleep detection (Sleep time ,Sleep quality) Calls to remind,SMS Reminder,Third-party messaging reminder Multilingual push,Clock alarm,Remote CameraSedentary reminder 400mAh big battery,super long standby time,Bright screen under sunshine Packing List: 1* original Smart Watch 1* charging cable 1* Adultual 1* Original Box Detailed Pictures : Detailed Pictures :