1. Bluetooth call, using high-fidelity waterproof speakers to free your hands and make communication more free. 2. Intelligent heart rate algorithm makes the heart rate more accurate, real-time monitoring of heart rate, blood pressure, blood oxygen, ECG, sleep monitoring 24 hours a day. 3. Equipped with precision motion sensors to record motion data throughout the day, automatically detect movement, record steps and intelligently calculate walking distance and calorie consumption. 4. ECG monitoring assesses heart health, integrates PPG+HRV measurement technology, and can monitor anytime, anywhere. 5. When connected to the mobile phone via Bluetooth and it can control the music playback of the mobile phone. 6. IP67 waterproof and dustproof, support hand washing and raining to meet daily needs. 7. Compatible system: iOS, Android system 8. APP supports languages: Russian, German, Italian, Japanese, French, Chinese, English, Portuguese, Spanish. 9. The device supports languages: English (default) German, Russian, Portuguese, Portuguese, Spanish, Italian, Turkish 10. Language supported by manual: Chinese, English 11. Chip: MTK 2502D 12. Memory: built-in (built-in CPU): RAM 32MB, ROM 32MB 13. Bluetooth: 4.0 + 3.0 14. Screen resolution: 240x240 15. Screen material: tempered glass 16. Battery type: lithium battery 17. Battery capacity: 260mAh 18. Charging time: 3 hours 19. Total length of wristband: 255mm