ZX19 1.45 inch HD Screen Bluetooth 5.0 IP68 Waterproof Women Smart Watch, Support Sleep Monitor Menstrual Cycle Reminder Heart Rate Monitor Blood Oxygen Monitoring, Style: Steel Strap 1. Material: alloy face shell + IML bottom shell + metal strap 2. Motherboard: NRF52832 3. Memory: 512KB+64KB (Flash 64M) 4. System requirements: Android 5.0 and above, IOS 10.0 and above 5. Charging head specifications: charging 1A or less 6. Charging time: 2H 7. Bluetooth version: Bluetooth 5.0 8. Screen display: 1.45 inches, resolution: 172*320 9. Battery capacity: 160 mA 10. Standby time: 30 days 11. Working time: 5-7 days 12. Waterproof rating: IP68 13. Sensor: gravity sensorheart rate sensor 14. Push supports 20 languages: Traditional Chinese, Simplified Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Romansian, Portuguese, Arabic, Greek, Dutch, Polish , Turkish, Vietnamese, Thai, Indonesian 15. Functions: heart rate detection, blood oxygen detection, blood pressure detection, female menstrual period, time display, step counting, calories, distance, heart rate, sleep time, switch display, 12 sports modes (runningwalkinghikingbadminton Rope skipping exercise yoga aerobics spinning elliptical machine rowing machine swing), sleep monitoring (sleep time, sleep quality), call notification, information reminder, multi-language push, alarm clock reminder, sedentary reminder, etc. 16. Size: 41.5x25.5x10mm 17. Weight: about 55g