Function 1. Bluetooth 5.0, Bluetooth device name: Bluetooth touch. Power supply: 300mA lithium battery power supply Charging: Charging current 250mA, charging time approximately 2 hours.2. Working current 16mA, continuous battery life 14 hours. Energy saving: 5 seconds without use, enter first level sleep current 5mA, 15 seconds without operation, enter second level sleep 20uA, 1 hour without operation, enter deep sleep, press button to wake up3. LED status indication, one red and one green light4. Low voltage indication, red light flashing slowly below 3.3V (flashing 10 times at a frequency of 1 second, flashing when there is an action),5. Charging indicator: Connect the USB charging cable, the red LED is permanently on, and the red light is off after charging is completed. Bluetooth function operation instructions:1. After powering on, the red light flashes once and the blue light turns on compatible with 3 seconds becompatible withe going out;2. Short press the pairing button once and the blue light will flash slowly (once per second) to enter pairing mode. The blue light will flash quickly 3 times per second Flashing 6 times indicates successful code matching Failed to exit Bluetooth pairing mode after 60S code pairing3. compatible with iPad and compatible with Windows 8,10,11 systems that support compatible with IPadOS13.4 or later operating systems will automatically recognize the paired device operating system after pairing.(!!!the Touchpad not support MAC system ,please note that )Material: Aluminum alloy + glasscolour: As shown Package Contents:1 x Bluetooth Touchpad1 x Charging cable Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.