S56T Heart RateBlood OxygenSleep Monitoring Bluetooth Call Outdoor Waterproof Smart Watch 1. Display: 1.39 inches 360x360 IPS full touch display 2. Chipset: Realtek 3. Chipset model: RTL8763EWE 4. App: FitCloudPro 5. Compatible system: Android5.1 or above, iOS8.0 or above 6. RAM+ROM: RAM270KB, ROM128Mb 7. Bluetooth version: 5.2 8. Bluetooth call: yes 9. Wireless network: no 10. NFC: no 11. Sensor: Yes 12. Gyroscope: no 13. Heart rate sensor: Tianyi Hexin 3605 14. GPS: no 15. Battery capacity: 300mAh lithium polymer battery 16. Charging method: magnetic charging cable 17. Dustproof and waterproof grade: IP67 18. Charging time: about 2.5H 19. Battery life: 3-5 days in use, 15 days in standby 20. Bluetooth calls: make and answer calls, reject calls, view call records, add contacts 21. Sports records: steps, distance, calories, sports mode 100+ 22. Message notification: information storage, APP notification, etc. 23. Health management: heart rate, blood oxygen saturation, blood pressure, sleep tracking, women's menstrual reminder 24. Other functions: calculator, stopwatch, weather, alarm clock, AI voice assistant, camera control, music control, playback 25. Languages: Chinese, Traditional Chinese, English, Spanish, Portuguese, German, Italian, French, Russian, Japanese, Polish, Vietnamese, Korean, Arabic, Hebrew, Thai, Croatian, Turkish, Czech, Dutch, Indian, Malay, Finnish, Greek, Romanian 26. Strap size: total length 255mm, adjustable length 155-235mm 27. Material: Main body: plastic + zinc alloy, button: aluminum alloy, wristband: silicone + stainless steel