Fangrui Product Details 1. E15 1.28 Inch Ips Color Screen Ip68 Waterproof Smart Wristband, Support Menstrual Cycle Reminder Heart Rate Monitoring Sleep Monitoring 2. Material: Zinc Alloy + Abspc 3. Screen: 1.28 Inch Ips Color Screen 4. Battery Capacity: 200mah 5. Band Memory: 128m Bit Flash, 160k Byte Ram 6. Bluetooth Version: 5.0 7. System Requirements: Android 4.4 And Above, Ios 8.0 And Above 8. Standby Time: 20-25 Days 9. Working Time: About 7 Days 10. Charging Interface: Magnetic Charging Stand 11. Ui Languages: Chinese, English, Korean, Japanese, German, Spanish, French, Italian, Portuguese, Arabic, Russian, Dutch, Indonesian, Hindi, Polish, Turkish 12. Bracelet Font Language: Chinese, English, Korean, Japanese, German, Spanish, French, Italian, Portuguese, Arabic, Russian, Dutch, Indonesian, Hindi, Polish, Turkish 13. App Supported Languages: English, Arabic, Czech, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Thai, Traditional Chinese , Turkish 14. Functions: 24 Exercise Modes, Heart Rate Detection, Blood Pressure Detection, Blood Oxygen Detection, Pedometer, Calories, Distance, Sleep Monitoring (sleep Time, Sleep Quality), Gps Track Exercise, Call Reminder, Message Content Push, Find Mobile Phone , Sedentary Reminder, Alarm Clock Reminder (5 Pcs), Reminder To Drink Water, Reminder To Take Medicine, Shake To Take Pictures, Female Physiological Reminder, Call Rejection, Etc. 15. Size: Diameter 4.4cm, Thickness 1.1cm