Specification: Screen size:1.28 inches TFT Round screen. Resolution:240*240. Capacity:280 mAh/4.2V. Charging Method: Magnetic suction. Charging time:About 90 minute. Charging current:300 mA. Double click to answer:CALL. Double headset:Stereo listening song/talk. single-headphone:Listen to songs /talk. Listen to songs& 65292;call average power consumption:About 8mA-9mA(average current. Hypnotize:Support wearing headphones to sleep.{Hypnosis requires white noise and is connected to a mobile phone} Headphone Battery capacity:18mA. Headphone charging mode:Put watch magnetic charging. Language& 65306; Watch Language: English.Japanese.Italian. Main Function : heart rate& 65292;blood pressure& 12289;blood oxygen& 65292;Step& 65292;Calories& 65292;Exercise mileage& 12289;Take pictures& 65292;Sleep monitoring& 65292;Alarm clock& 65292;Message record& 12289;Sedentary reminder& 65292;Call reminder, low power prompt, brightness adjustment, searching mobile phone, language switching, dial switching, time and date adjustment, stopwatch, music playing control.