Buzzer button: Feel like you're in a real quiz show - now you can with our buzzer button. In addition to the well-known Bzzzzzzz sound, the cross in the front lights up red. Thanks to LED technology, you can save energy and can have fun for weeks or months with a set of 2 AA batteries. The buzzer's signaling effect can be used to train dogs and is therefore a great alternative to whistles, for example. The buzzer can not only be pressed for fun, but also when things are stressful at work and you can reduce some frustration. Colleagues will have fun with it too - people like to hit a buzzer like this too. Delivery Quantity: 1pc Package Contents: Only the above package content, other products are not included. no battery provided Size: 9.7*11.2*11.6 cm (Reminder: The size is measured manually, please allow 1-2 cm measurement error) Color: as picture shown (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)