QS40 1.39 inch BT5.2 Smart Sport Watch, Support Bluetooth Call Sleep Blood Oxygen Temperature Heart Rate Blood Pressure Health Monitor General specifications: 1. Product size: 44.7x10.5mm 2. Case material: Zinc alloy, PCandABS 3. Strap material: silicone strap 4. Product weight: 57g 5. Waterproof level: IP67 6. Battery life: 5-7 days (depending on usage scenarios) 7. Charging time: Less than or equal to 2H 8. Compatible with smartphone systems: Android 4.4 or IOS 9.0 or above systems that support Bluetooth 5.2 BLE 9. Watch firmware language: Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish 10. APP language: Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean Hardware Configuration: 1. MCU: RTL8763EWE 2. Battery: 260mAh 3. APP: Fit Cloud Pro 4. Flash: 128Mb 5. Heart rate chip: LC09A 6. Bluetooth: BLE5.2 7. Display: 1.39 inch, 360x360 TFT display 8. Physical buttons: 2 9. Touch: Full screen touch Software configuration: 1. Built-in dials: 5 built-in dials, supports custom dials 2. Basic functions: breathing training, respiration rate, female menstrual cycle, state, Audio, call records, incoming callanswerrejection, music, message push, alarm clock, Turn your wrist to brighten the screen, backhand screen off, Do Not Disturb Mode, Shake to take a photo, find phone, Step count, countdown, stopwatch 3. Bluetooth call connection: Connect 1 time 4. Health management: Sleep monitoring, heart rate, blood pressure, Blood oxygen, breathing training, Sedentary reminder 5. Sports modes: 8 sports modes Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.