Buzzer Button with Light and Sound: Built for durability, easy to store, easy to use Easy to use "-in" buzzer system: Just press the buzzers to turn it on and it will buzz loudly. Adds so much fun to your A great buzzer for your home quiz nights, a perfect classroom accessory, family game night competitors rejoice Great for games and competition: Great party competition toy for competitive trivia games, answer buzzers make it easy for competitors to buzz in when an answer Battery: 2 AA batteries (not included) Color: Black + Red Material: Plastic Size: 97 x 112 x 116 mm Package Contents: 8 x Answer Buzzer 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 +/- 1-3 cm.