Turn heads with our Blue Sound Activated LED Badge at your nighttime event. Each badge measures 4.5" high by 3" wide and comes with a 38" white breakaway lanyard attached. Slide the switch up for sound activated lights or slide the switch down for steady on lights. With the help the blue LED light at the top of the pendant,our LED badge burns brightly through the night. Light up the night for partygoers,and decorations to brighten your room! Night time runners or dog walkers can be seen by motorists and other pedestrians,too. Our light up blue badges have numerous uses that will delight anyone! Sold by the piece our Blue Sound Activated LED Badge comes with 2 replaceable CR1220 batteries included and installed.