Screen size resolution:2.08nch 390*435-TFT APP:Wear Fit pro System requirements:android5.0+ / ios10.0+ The main chip:HS6621-PG memory:128MB Bluetooth phone:AB5376A2 Bluetooth version:5.2 Battery capacity:300mah Loudspeaker: YES The motor:YES The encoder:YES Function keys:YES Charging interface mode:wireless charger cable Feature： Bluetooth phone Multiple dial switch We chat/Ali pay payment function NFC access control unlock Positioning function The voice function Heart rate test Blood oxygen Blood pressure function Smart honeycomb style menu Double click the screen to wake up the function The weather to remind Phone calls reminding Sedentary remind Scan code to connect Step gauge calories distance Movement patterns Raised my hand against the bright screen Sleep monitoring The alarm clock to remind Stopwatch Looking for a watch Intelligent split screen display Combination lock screen Music playback Breathing training Measuring the hour The calculator Surrounding the health Health code shortcut APP Information Notification Business card function Shake to take pictures Bedside clock Alarm clock Short video remote control time setting Gaming function Fitness course Bate screen pointer Languages： Simplified Chinese, English, French, Spanish, Portuguese, Russian, German, Thai, Polish, Italian, Japanese, Chinese Traditional, Czech, Turkish, Greek, Dutch, Vietnamese, Arabic, Persian, Danish, Romanian, Latin, Ukrainian (23 languages)