ST5 MAX Smart Recording Waterproof Voice Calling Watch 1. Main control chip: Irvine XC 28062. Screen size: 1.45 inches TFT, 416x416/IPS 3. Supported devices: ios9.0 or above, Android5.0 or above 4. Supported languages: Simplified Chinese, Traditional Chinese, English, Russian, Spanish, Portuguese, French, German, Japanese, Italian, Thai, Malay, Turkish, Polish, Vietnamese, Korean 5. Basic functions: heart rate/blood pressure/blood oxygen/sleep monitoring, Bluetooth calls, music, AI voice istant, recording, one-button recording, step counting, breathing training 6. Other auxiliary functions: raise your hand to call the screen, function menu style (4 types can be switched), weather (connected to APP), stopwatch, timer, alarm clock, calculator, remote control camera (after the APP opens the function, the watch Can control remote sf-timer), find watch, find mobile phone, screen lock protection, do not disturb mode 7. Memory configuration: 128M 8. Heart rate sensor: EM 71289. Touch method: full touch 10. Battery capacity: 240mAh 11. Charging method: 4pin magnetic charging 12. Standby time: 45 days 13. Use time: about 15 days 14. Button: double physical button + encoder 15. Waterproof grade: IP 6716. Body size: 46 x 46 x 12mm 17. Strap size: 121 x 90 x 3mmPacking list:-Watch x 1-USB magnetic charging cable x 1-Instruction manual x 1