Model: T55 44mm Smartwatch Display size: 1.54inch Resolution: 240*240 Touch form: full touch TP: G+F full fit Battery capacity: 200mAH Cover material: 2.5D tempered glass Body material: zinc alloy CPU: BLE5.0 Heart rate sensor External flash: 64M Vibration: Motor Bluetooth: Bluetooth 5.0 Charger interface: contact type Display screen: 240*240 1.54 inch Button: 1 touch switch (definition: long press to switch the machine, short press to turn on the screen in the off state, short press on the non-time interface to return to the main interface in the on state, short press to turn off the screen in the time interface Rotary button: Rotary button Incremental encoder UI interface: can achieve smooth interactive dynamic UI effects Android system version: above 4.4 iOS system version: 8.4 or above, iOS 5S or above Watch language English, Japanese, French, German, Russian, Arabic, Spanish, Portuguese, Italian, Polish, Indonesian, Thai Main Function: Bluetooth voice call: support Call dial pad: support Address book synchronization: support up to 1000 entries Call records: save up to 50 Message reminder: Support, save up to 15 items (can be deleted) Time display: support Step counting: support Calories: Support Distance: Support Sports mode: support (yoga/circular machine/climbing/swimming/running/strike) Raise your hand to brighten the screen: Support Sleep monitoring: support Running track: support Call reminder: Support Sedentary reminder: Support Weather synchronization: support Alarm clock reminder: support Shake to take pictures: support Find phone: Support Drink water reminder: support Do not disturb mode: support Find a bracelet: Support Dial switch: support (APP requires at least 8 dials to switch) Heart rate: support Blood pressure: suppor