Usage Tips:Game answer buzzers: you will receive 4 packs buzzer light buttons with light and sound, the shell color is black and red, and one side is blue with a big white "x" on top, increase lots of fun to the games and easy to use (recommended age: 12 ages and up) Funny game props: game answer buttons are Perfect for fun pranks, desk gadgets, home game at night, club revelry, gags and more; Also can be applied as party competition props for adults, boys and girls, the participants can be actively encouraged to participate in the competition by using quiz buzzers Make quizzes more interesting: use the game button buzzers in class, can mobilize the enthusiasm of students, help them get involved and positive thinking, that will make classes much more entertaining and activity Durable and portable: buzzer sound buttons are made of durable and resistant ABS material, even dropped many times that still work, lightweight and easy to carry, measures approx. 97x112x116mm, dimension not too small or too large, suitable for 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, and 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 shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.