Fine Material: The digital clock is of fine ABS plastic made, which features great durability Battery Powered: The digital clock is designed to be battery powered, which is easy for us to change batteries Button Control: The digital clock is designed to be button controlled, which is easy for us to set Solid Color: The digital clock has 2 colors that you can choose according to your likes Backlight: The digital clock also support sound control backlight, which is easy to read time in the evening