Game answer buzzers: you will receive 4 packs buzzer light buttons with light sound, the shell col is black red, side is blue with a big white "x" on top, increase lots of to the games easy to use (recommended age: 12 ages up) Funny game props: game answer buttons are Perfect f pranks, desk gadgets, home game at night, club revelry, gags me Also can be applied as party competition props f adults, boys girls, the participants can be actively encouraged to participate in the competition by using quiz buzzers Make quizzes me interesting: use button buzzers , can mobilize the enthusiasm of students, help them get involved positive thinking, that will make classes much me entertaining activity Durable ptable: buzzer sound buttons are made of durable resistant ABS material, even dropped many times that still wk, easy to carry, measures . 97x112x116mm, dimension not too small too , suitable f any ages Easy to use: contest buzzers are powered by 2 AA batteries (batteries not included), after installing the batteries, simply press the red buzzers to light them up, game answer buzzers have appropriate volume, loud enough without sounding too loud colour: as shown Material: ABS Package Contents: 4 x Game Answer Buzzers Only the above package content, other products are not included. Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.