Parameter: Screen size: 1.85-inch IPS full-circle screen display Screen resolution: 360*360 Memory: Flash128MB Battery capacity: 730 mAh app name: FitCloudPro Bluetooth version: BLE 5.0 System requirements: Android 4.4 and above, IOS 8.0 and above, supports Bluetooth 5.0 Function: ▶Massive dial push and customized dials ▶Bluetooth calls/Bluetooth music (super clear sound quality), weather display ▶Heart rate detection, blood pressure detection, blood oxygen detection, all-day heart rate detection ▶Flashlight, time display, flashlight, step counter, calories, distance, heart rate, blood pressure, blood oxygen, sleep time, power on/off display, stopwatch, multi-sport mode ▶Sleep monitoring (sleep time, sleep quality) ▶Incoming call notification, message reminder, multi-language push, alarm clock reminder, remote photography, sedentary reminder language: English,Chinese,Japanese,German,French,Spanish,Arabic,Russian,Ukrainian,Russian,Portuguese Packing list: K66 smart watch*1 Instruction manual*1 Charger*1 Original box*1