WS-20 1.43 inch IP67 Sport Smart Watch Support Bluetooth Call Sleep Blood Oxygen Heart Rate Blood Pressure Health Monitor 1. Bracelet size: 4.8 x 5.6 x 1.5cm 2. Weight: 70g 3. Chipset: JLII 7012 4. APP: FereFit 5. FLASH memory: 128MB 6. Compatible with smartphone systems: Android 5.0 or IOS 9.0 or above systems. 7. Screen size: 1.43 inch, Full touch screen. 8. Resolution: 466 x 466 9. Bluetooth: 3.05.0 10. Waterproof Level: IP67 11. G-Sensor: SC7A20E 12. Battery: 260mAh lithium polymer battery. 13. Charging Method: Wireless charging. 14. APPWatch language: English (default), Chinese (Simplified), Turkish, Russian, Spanish, Italian, Portuguese, German, French, Dutch, Polish, Czech, Hungarian, Slovak, Japanese, Danish, Finnish, Norwegian, Swedish, Serbian, Thai, Hindi, Greek, Chinese (Traditional), Lithuanian, Vietnamese, Arabic, Indonesian, Ukrainian, Hebrew, Bengali, Estonian, Slovenian, Persian, Romanian, Bulgarian, Croatian, Urdu, Malay, Javanese, Marathi. 15. Major function: Camera, off, standby dial, cycling; cell phone music, weather, dialing, messaging, brightness adjustment; calendar, alarm clock, oxygen, pressure, walking, restart; language, calls (contacts, call logs, dialing), pedometer, exercise (running, indoor, walking, cycling, mountaineering, basketball, badminton, soccer, yoga, free exercise, custom (to delete sports items that have been added), heart rate, exercise log, running; Menu style (list, honeycomb, scroll, Kaleidoscope, waterfall flow), calculator, blood pressure, sleep, stopwatch, contact; do not disturb, find, settings (adjust brightness, password, do not disturb mode, language switch, menu style, system menu, standby dial, raise hand to light screen, always light time, on), breathing, countdown; resume factory, on, voice assistant, mountaineering. 16. Charging time: 2-3H 17. Lifetime: 7-15Days 18. Wristband size: Total length 257mm, width 48mm.