Chip: Realtek8762DTWS chip: 8926B2 (Zhongke Lanxun), heart rate chip: Tianyi Hexin 3300Screen size: 1.32 inches, resolution: 360*360Bluetooth version: Bluetooth 5.0 for calls/Bluetooth 4.0 for data;Watch/charging compartment battery capacity: 250mAh lithium polymer battery, earphone battery capacity: 30mAh lithium polymer batteryCharging box function: The main body can charge the pair of ears for 2-3 cycles, standby time: 8-12 daysMusic time: 3.5 hours, charging method: magnetic charging, charging time: 1-2 hoursControl method: full screen touch+keys,Compatible systems: Android 4.4 and above; ios 8.0 and aboveAPP software: FitCloudProFunction: Multi-language, message reminder, alarm clock, bracelet search, health monitoring, exercise record (pedometer, calories, mileage) heart rate, shake to take pictures, call reminder/rejection, information storage, multi-sport mode, weather, time .Information reminder: SMS, QQ, WeChat, Skype, Facebook, Twitter, WhatsApp, Line, Viber, etc.On-ear button functions:1. Click the button 4 times before pairing------------switch between Chinese and English prompts;2. Press and hold for 2S to turn on the phone, press and hold for 1.5 seconds to reject the call, and press and hold for 3 seconds to turn off the phone;3. Double-click the button-----answer/hang up the call;4. 4-click the button---wake up SIRI;5. Double-click the button-----play/pause;6. Triple-click the left ear button: previous song; triple-click the right ear button: next song);7. Restore the headset to factory settings: With the headset turned off, press and hold for 8 seconds. (If the ears cannot be paired, you can restore them to factory settings and re-pair them)Supported languages: English, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Korean, Vietnamese, Arabic, Hebrew, Thai, Croatian, Czech, Dutch, Indonesian, Malaysian, Finnish English, Greek, Romanian, Hindi