1. Chip model: Dialog 14695 2. RAM: 64K 3. ROM: 128M 4. Bluetooth version: BLE 5.0 5. Heart rate sensor: HX3690Q (true blood oxygen) 6. Acceleration sensor: STK8321 7. GPS: Broadcom 47755 8. Size: 1.69 inch TFT screen, resolution: 240*280 9. Battery capacity: 260mAh 10. System requirements: IOS9.0 and Android 4.4 and above 11. Waterproof rating: IP68 12. Product firmware language: Chinese, English, Russian, Japanese, German, Spanish, French, Italian, Polish, Korean, Portuguese 13. APP language: English, Simplified Chinese, Traditional Chinese, Japanese, French, German, Italian, Spanish, Russian, Portuguese, Malay, Korean, Polish, Thai, Romanian, Bulgarian, Hungarian , Turkish, Czech, Slovak, Danish, Norwegian, Swedish, Filipino, Ukrainian, Vietnamese, Dutch, Croatian, Arabic, Indonesian, Greek 14. Functions: step counting, heart rate monitoring, sleep monitoring, blood pressure monitoring, blood oxygen monitoring, multiple sports modes (outdoor running, indoor running, indoor cycling, outdoor cycling, walking, free training, table tennis, basketball, football , Badminton, cricket, mountaineering, cross-country, pool swimming, open water swimming, stair climbing), information and social information push, call reminder, alarm clock, sedentary reminder, stopwatch, mobile phone search, remote camera, etc. 15. Material: aluminum alloy + TPU 16. Weight: 45.5g 17. Size: 52.0x37.0x11.5mm