Fangrui Product Details 1. I9 1.3 Inch Heart Rateblood Pressureblood Oxygen Monitoring Watch, Color: Black Steel 2. Material: Alloy, Abs, Silicone Leathersteel, Electronic Components 3. Functions: Step Counting, Smart Reminder, Remote Control Selfie, Information Push, Audio And Video Entertainment, Mobile Positioning, Sports Tracking, Social Entertainment, Health Monitoring, Trackingalarm, Sleep Analysis 4. Supported Languages: English, Japanese, Korean, German, Spanish, French, Italian, Russian, Portuguese, Arabic, Chinese 5. Compatible System: Android, Ios 6. Screen Size: 1.3 Inches 7. Screen Resolution: 240 X 240px 8. Bluetooth Version: 4.0, 3.0 9. Body Memory: 128kb+1m 10. Wearing Method: Wristband Type 11. Battery Capacity: 200mah Lithium Battery 12. Working Time: About 5-7 Days 13. Standby Time: About 30 Days 14. Operation Mode: Touch + Button 15. Waterproof Grade: Ip67 16. Using 1.3-inch High-definition Full-touch Ips Color Screen, The Picture Is Clear And Smooth 17. Built-in 10 Sports Modes, Scientific And Healthy Sports 18. Oversized Speakers 3d Surround, Enjoy Music At Close Range 19. Back Optical Heart Rate Sensor Design, Real-time Heart Rate Monitoring