J45 1.43 inch BT5.1 Smart Sport Watch, Support Sleep Heart Rate Blood Oxygen Blood Pressure Health Monitor General specifications: 1. APP: DaFit 2. Case material: ABS+PC 3. G-SENSOR: QMA6100P 4. Middle frame material: Zinc alloy 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 8.0 or IOS 9.0 or above systems that support Bluetooth 5.1 BLE 9. Watch firmware language: 17 languages (Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean, Dutch, Hindi) 10. APP language: 15 languages (Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean) Hardware Configuration: 1. MCU: SF551 2. Flash: 128Mb 3. Heart rate chip: HX3605 4. Bluetooth: BLE5.1 5. Display: 1.43 inch, 466x466 AMOLED LCD 6. Touch: Full screen touch + 2 button 7. Battery: 260mAh polymer battery Software configuration: 1. Built-in dials: 8 built-in dials, supports custom dials 2. Basic functions: Data, Female physiological cycle, exercise mode, call history, contacts, call reminderanswerreject, music, message push, sedentary reminder, alarm clock, wrist flip screen onoff, shake to take a photo, do not disturb mode, search for phone, step count, stopwatch 3. Bluetooth call connection: Connect 1 time 4. Health management: Sleep monitoring, heart rate, blood pressure, Blood oxygen detection 5. Sports modes: 107 sports modes