QS90 1.39 inch BT5.0 Smart Sport Watch, Support Bluetooth Call Sleep Blood Oxygen Temperature Heart Rate Blood Pressure Health Monitor Water Reminder General specifications: 1. Product size: 38x10mm 2. Case material: Zinc alloy+ABS 3. Strap material: silicone strap 4. Product weight: 46g 5. Waterproof level: IP67 6. Battery life: 3-6 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 5.0 BLE 9. Watch firmware language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italy, Portugal 10. APP language: English, Arabic, Danish, German, Spanish, Finnish, French, Italian, Japanese, Korean, Dutch, Norwegian, Polish, Portuguese, Russian, Swedish, Thai, Ukrainian, Chinese, Traditional Chinese Hardware Configuration: 1. CPU: Realtek 8763EWE 2. Battery: 300mAh 3. Heart rate chip: LC09 4. Bluetooth: BLE5.0 5. Display: 1.39 inch 6. Touch: Full screen touch Software configuration: 1. Health Monitor: temperature taking ，Step counting, sleep monitoring, heart rate, blood pressure, blood oxygen, sedentary reminder, water reminder 2. Sports modes: number of sports steps, sports mileage record, card consumption, a variety of sports mode. Movement track (mobile APP display) 3. Other functions: Mute alarm clock, remote photo taking, music control, sedentary reminder, water reminder, weather display, etc