Description: - Android system 4.4 version or above iOS system 8.0 version or above Support bluetooth with 5.0 version - BLE 5.0 - Realtek8762DK - Flash128MB - 400mAh - standby about 30days. Specifications: - 1.39 inch IPS screen - Multiple watch faces pushing,Customized watch faces - Bluetooth calling or BT music(Superior clear audio like sound effect),Weather - Heart rate detection or Blood pressure detection or Blood oxygen detection or Wole-day heart rate monitor - Timer ,Pedometer,Calorie Consumption,Distance Calculation,Heart rate,Blood pressure,Blood oxygen,Sleep time or quality,On and 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. Language English,Chinese,Japanese,German,French,Spanish,Arabic,Russian,Ukrainian,Russian,Portuguese Package Included: 1 x smart watch 1 x charging cable 1 x user manual