1. Main screen: 1.28-inch TFT full-circle screen, resolution: 240*240 2. Bluetooth version: Bluetooth 4.0 3. Battery specification and capacity: 230MAH high-capacity polymer, fully charged in 150 minutes 4. Standby time: about 60 days 5. Charging method: magnetic charging cable 6. Waterproof grade: IP68 7. Memory RAM: 128KB, ROM: 512KB + external 128MB 8. Material: alloy bright vacuum plating case, 2.5D reinforced mineral glass mirror, plastic back cover, food grade silicone strap/stainless steel mesh strap 9. The watch supports languages: Chinese, English, Japanese, Russian, Spanish, French, Italian, German, Portuguese, Thai 10. APP supports languages: Chinese, English, Japanese, Russian, Spanish, French, Italian, German, Portuguese, Thai 11. Functions: body temperature monitoring, dial download, heart rate, ECG, blood pressure and blood oxygen monitoring, step counting, stopwatch, bluetooth photography, sleep monitoring, calorie consumption, exercise mileage record, call rejection, caller ID, information notification, weather, etc. 12. Compatible system: support Android 4.4 and above, IOS 9.0 and above 13. Dimensions: 44x44x12mm, quick release strap loop length 230mm, width 20mm 14. Weight: 50g