Dailytech space design decorative digital led table top and wall clock product description: product name: 3d led digital wall clock. weight : about 190 grams. size : 225mm * 85mm * 17mm material : acrylic temperature range : 0-50 ?(32-122 ?) color : white (case color) light : white light power supply : usb output voltage : dc 5v input voltage : 100-240v package contents: 1 * led wall clock 1 * usb cable 1 * user manual clock setting instructions: press and hold the set button for 5-10 seconds. then set your time with the up-down buttons. operation steps: setting: press and hold the set button for three seconds to enter the settings: enter the 12/24 hour setting and press up/down to switch. press up/down to set, press up/down to set, press up/down to fast forward or backward press set to set time and date operation at the same time. press the set to turn off the alarm clock when enter the set alarm clock, the specific operation is set at the same time. press the set to set the alarm and set the operation at the same time. note: the clock will not work when you unplug the usb power cable. :but thanks to the battery on the back, when you plug the usb cable again after a long time, it allows it to continue from where it left off without having to re-set the clock. Create a party-ready atmosphere with this colorful LED lighting. Easy to install and perfect for events or home decoration.