1. Master chip: NRF52832 QFAA 2. Sensor: BOSCH BMA421 3. Photoelectric chip: HRS3300 4. Bluetooth 4.0 5. Display: 1.22 inch TFT color screen 240*240 6. Shell material: ABS, strap: TPU (adjustable length: 245mm) 7. Battery: 180mAh 125 hours battery life, 300 hours standby time 8. Compatible system: Android 4.4 and above, iOS 9.0 above 9. Main features: heart rate monitoring, blood pressure monitoring, step counting, calories, motion track, sleep monitoring, sedentary reminder, call reminder, alarm reminder, social sharing (WeChat, QQ, Facebook, Twitter), shake hand to take phonto, etc. 10. Product Language: - Watch supports languages: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian - APP supports languages: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian 11. Size: 44.28*44.28*12.16mm, weight: 45g