Flashing Panda Fiber Optic LED Light Up Flashing Headband, Assorted Colors - 1 Headband Comes in assorted colors Simple on/off slide-switch operation (turn on and off as desired) Comes with three replaceable 1.5 volt LR44 (AG13) Lithium batteries preinstalled! Dimensions: 5" wide x 9 1/4" tall For adults and children of all ages!