Game buzzers: you will receive 4 pack buzzer light buttons with light and sound, the shell color is black and red, side is blue with a big white "x" on top, adds excitement to games and is easy to use (recommended age: 12 years and up) Funny game props: game buttons are perfect for pranks, desk gadgets, home games at night, club events, gags and more; also can be used as party competition props for adults and teens, encouraging active participation in games and quizzes Make quizzes more interesting: use button buzzers to mobilize enthusiasm, help with engagement and positive thinking, making classes more entertaining and interactive Durable and portable: buzzer sound buttons are made of durable ABS material, withstand drops and continue to function, lightweight and easy to carry, measures 97x112x116mm, size is suitable for most hand sizes and ages Easy to use: contest buzzers are powered by 2 AA batteries (batteries not included), after installing batteries, simply press the red button to activate light and sound, buzzers have appropriate volume, loud enough without being excessive Color: as shown Material: ABS Package Contents: 4 x Game Buzzers Only the above package content, other products are not included Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3cm