feature 100% Brand New. Appearance Color: white Size: Approx 13.5 x 6 x 11.5 cm (1in = 2.54cm) Display Screen: LED screen Light Color: Blue Power Supply: 5 V Power or AAA battery (Batteries not included) Digital clock has a LED light message board with a highlighter You can write any words on the board what you like. At night, you can read the words on the LED luminous screen board You can switch the time, date, temperature or display model. There are 12 hours or 24 hours format selection, degrees Celsius or Fahrenheit option and three regular alarm clock and snooze function 16 world famous songs How to use? 1. Inquire Function To choose time display mode and to press M key to inquire. B. Time Setting To choose time display mode and to press S key for 3 secs, then press S key to set time. C. Alarm Clock Setting Pressing M key to choose alarm clock mode and pressing S key for 3 secs to set time. Note: It comes without the power lines, and it support battery or DC 5V power adapter Package Content: 1x LED Message Board Alarm Clock 1 x Pen 1 x User manual