Zeblaze GTR2 1.28 inch Color Touch Screen Bluetooth 5.0 IP68 Waterproof Smart Watch, Support Sleep Monitor Heart Rate Monitor Blood Pressure Monitoring 1. Chip: Realtek 8762C 2. Waterproof: IP68 3. Display: 1.28 inches high-definition color touch screen, resolution: 240*240 pixels 4. Sensors: heart rate sensor, proximity sensor, accelerometer 5. Bluetooth: BLE 5.0 6. Battery capacity: 230 mAh lithium polymer battery 7. Battery life: power saving watch mode: up to 14 days; smart watch mode: about 7 days 8. Charging time: about 1.5 hours 9. Compatibility: Android 6.0 or iOS 9.0 and above 10. System languages: Chinese, English, Portuguese, German, Turkish, Spanish, French, Italian, Arabic, Russian, Dutch, Korean, Japanese, Hindi, Czech, Polish, Indonesian 11. APP language: Simplified Chinese, Traditional Chinese, English, Italian, Portuguese, Korean, Japanese, German, Spanish, French, Arabic, Hindi, Polish, Russian, Dutch, Turkish, Indonesian ,Czech 12. Message push language: Simplified Chinese, Traditional Chinese, English, Portuguese, German, Spanish, French, Italian, Arabic, Korean, Japanese, Hindi, Polish, Russian, Dutch, Turkish, Indonesia Language, Czech 13. Functions: timedate, alarm clock, timer, stopwatch, daily resting heart rate, abnormal heart rate alert, SpO2 level measurement, blood pressure monitoring, sleep score and insight, calorie burn tracking, smart notification, weather, control smartphone Music, Find My Phone, Find My Watch, Do Not Disturb Mode, Mobile Reminder, Pedometer, Mobile Bar (displayed on the device after a period of inactivity; reset by walking for a few minutes), automatic target (understand Your activity level and specify your daily step goal), real-time pace & distance, sports mode (outdoor running, cycling, skipping rope, badminton, table tennis, tennis, climbing, walking, basketball, football, baseball, volleyball, board Ball, rugby, hockey, dance, spinning, yoga, sit-ups, indoor running, gymnastics, rowing, jumping), etc. 14. Material: zinc alloy + stainless steel + TPU 15. Strap width: 22 mm 16.Wrist circumference 140-