XINJI Nothing 2 [APP:OnWearPro] Product dimension 45*45*12mm Weight NA CPU Realtek8763EW Memory RAM:578KB+ROM 640KB External flash memory 1Gb Display 1.32inch AMOLED 360*360 Touch screen Capacitive Full Touch Screen Hear rate senso VP60A Pedometer stk8321 Bluetooth BT3.0+BLE5.2 Watch body Aluminum alloy Bottom shell Plastic Watch band Silicone + steel (in-mold injection), Surface Fuel Injection Battery 3.8V 260mAh Lithium Polymer Battery Standby Time>15 days Usage Time>7 days Button Rotating Side Button (ON/OFF key and switch watch face) Charging type Magnetic charging Water resistance 3ATM GPS NA Refresh Rate 40HZ Motor Support Microphone Support Speaker Support Function parameter Operation System FreeRTOS Time Sync Support Alarm Support Multiple sports Support walking, running, mountain climbing, cycling, spinning, swimming, basketball, elliptical machine, yoga, football, rowing machine, free training (Existing sports modes, more can be added) Weather Support（Need App） Gesture wakeup Support Watch Languages Support Chinese Simplified, English (default), German, Russian, Spanish, Portuguese, French, Japanese, Italian, Polish (Existing languages, more can be added) Andiord compatibility Support Android 5.0 and above, IOS compatibility Support IOS 10.0 and above Sleep monitoring Support Timer Support Find phone Support Coming call/SMS reminder Support Notification push Support Hear rate monitoring Support Blood pressure detection NA Blood oxygen detection Support Respiratory training Support Female menstrual cycle Support Temperature deection NA Remote photograph Support Remote music control Support Watch faces Support Push watch face Support DIY watch face Support Remote upgrade Support Data sync Support Call Support Frequent contacts Support Bluetooth earphone Support