This Elf in a Gift Box Motion Burlap Door Décor features sound and motion for an engaging experience. The festive 3D elf comes to life as he pops out of the wrapped present to the tune of "We Wish You a Merry Christmas." The embedded front sensor picks up motion from 1 meter away before activating for 15 seconds. It needs dim lighting to trigger and will not play again until there is additional movement. Each design has an on/off switch located on its waterproof battery box that is safe for outdoor use. The box is hidden inside a pouch that is easily accessible to change out the batteries. Requires 3 AA batteries (not included). Happy holidays!