HD LED display Plug-in and battery two ways to use(With the battery can not keep always bright screen) Can be used as a wall clock or as a desk clock Current temperature can be displayed There are three levels of brightness that can be adjusted Clock size L x W x H(cm): 25.8 x 3.8 x 7 (cm) Plug-in and battery two ways to use (using the battery screen can not always keep the bright screen) notice:battery to use carbon batteries Color: Black Material: plastic Power supply mode: 3 x AAA batteries (not included) Package Contents: 1 x alarm clock 1 x 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.