PG666 1.39 inch TFT Screen Bluetooth Call Smart Watch, Support Heart Rate Blood Pressure Monitoring 1. Functions: 6 sets of themes, custom dial, support step counting, brightness adjustment, multi-sport mode, sleep detection, heart rate, blood pressure, blood oxygen, breathing training, information push, remote music, remote camera, voice assistant, Real-time weather, find mobile phone (connected to mobile phone), alarm clock, timer, stopwatch, do not disturb mode, female menstrual cycle, Bluetooth call 2. App supports languages: Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Turkish, Japanese, Polish, Romanian, Thai, Vietnamese, Indonesian Chinese, Korean, Arabic 3. Languages supported by the device: Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Portuguese, Russian, Turkish, Japanese, Korean, Polish, Thai, Vietnamese, Indonesian, Greek Hebrew, Malay 4. Instruction manual support language: Chinese, English 5. Compatible system: IOS 9.0 and above Android 5.0 and above 6. APP: PGFit 7. Chip: Realtek: 8763EWE 8. Button type: 2 physical buttons 9. Heart rate sensor: LC11S 10. Bluetooth: 5.1 11. Process: zinc alloy + ABS 12. Screen size: 1.39-inch TFT high-definition round screen 13. Screen resolution: 360x360 14. Screen type: IPS full viewing angle color screen 15. Touch screen material: glass 16. Wristband Material: Silicone 17. Battery capacity: 340mAh 18. Battery life: 5-7 days for normal connection and 20-30 days for standby. (Connection usage depends on personal usage) 19. Charging method: Magnetic charging 20. Charging time: about 3 hours 21. Head size: 50.4x54.3x13.2mm, wrist strap length: 270mm 22. Net weight: 45 grams