QS40 1.39 inch BT5.2 Smart Sport Watch, Support Bluetooth Call / Sleep / Blood Oxygen / Temperature / Heart Rate / Blood Pressure Health Monitor(Grey)

General specifications:1. Product size: 44.7×10.5mm2. Case material: Zinc alloy, PC+ABS3. Strap material: silicone strap4. Product weight: 57g5. Waterproof level: IP676. Battery life: 5-7 days (depending on usage scenarios)7. Charging time: Less than or equal to 2H8. Compatible with smartphone systems: Android 4.4 or IOS 9.0 or above systems that support Bluetooth 5.2 BLE9. Watch firmware language: Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish10. APP language: Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, KoreanHardware Configuration:1. MCU: RTL8763EWE2. Battery: 260mAh3. APP: Fit Cloud Pro4. Flash: 128Mb5. Heart rate chip: LC09A6. Bluetooth: BLE5.27. Display: 1.39 inch, 360×360 TFT display8. Physical buttons: 29. Touch: Full screen touchSoftware configuration:1. Built-in dials: 5 built-in dials, supports custom dials2. Basic functions: breathing training, respiration rate, female menstrual cycle, state, Audio, call records, incoming call/answer/rejection, music,