Description:Power-saving display can be controlled by voice, the voice control switch can be adjusted freely, and the display will automatically turn off after a few seconds. When the sound at a close distance is greater than 60 decibels, the display can be awakened.Can be plugged in via USB or powered by 3 AAA batteries (not included).We recommend using USB, because the battery only lasts one day, and the LED alarm clock is very power-hungry.Function:Automatic switching display of time/temperatureTwo display methods of temperature: Fahrenheit/Celsius3 sets of alarm settingsParameter:Color: bamboo wood color/blackSize: 6.5*6.5*6.5cmMaterial: ABS + wood grain paperPackage Included:1*Clock, 1*USB cable, 1*User manual