ZX10 1.09 inch HD Color 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. Display: 1.09 inch high-definition color screen, resolution: 240*240 2. System requirements: Android 5.0 and above, IOS 10.0 and above 3. Charging head specifications: charging 1A or less 4. Charging time: 2H 5. Bluetooth version: Bluetooth 5.0 6. Main control: NRF 52832 7. Memory: 512KB+64KB (Flash 64M) 8. Battery capacity: 140 mAh 9. Standby time: 30 days 10. Working time: 3-5 days 11. Waterproof rating: IP68 12. Sensor: gravity sensorheart rate sensor 13. Push supports 20 languages: Traditional Chinese, Simplified Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Romansiya, Portuguese, Arabic, Greek, Dutch, Polish , Turkish, Vietnamese, Thai, Indonesian 14. Functions: heart rate detection, blood oxygen detection, time display, step counting, calories, distance, sleep time, switch machine display, standard exercise functions (walkingrunninghikingswingrope skippingexercise), sleep monitoring (sleeping) Time, sleep quality), call notification, message reminder, multi-language push, alarm clock reminder, task reminder, sedentary reminder, etc. 15. Machine size: 39x39x10.6mm 16. Weight: about 55g