This is the perfect prank to play on your mates Makes a noise when the lights go off stops when they are on 6 to collect Test button Cool microchip design Requires 3x LR44 batteries supplied Hide this small light-activated sound bug in someones bedroom. When the lights are on theyre quiet but when the lights go off...thats when the madness begins Instead of the victim getting some peaceful shuteye theyll hear an exasperating coughing sound over & over & over Theyll be even more furious when they turn on the light & it stops Simply place the Irritating Sound Bug in a hard to find place & watch the hilarious situation unfold from the safety of your own hiding place. Available in Coughing Snoring Car Alarm Dripping Tap Mobile Phone Ring & Mosquito. Please note These products are supplied randomly. To select the version you want please visit one of our stores nationwide