Description: BUZZ WHEN YOU HAVE THE ANSWER: Response buzzers let players easily buzz when they have an answer. WAYS TO MAKE LEARNING FUN: Actively engage kids with "game show" style buzzers with 4 pre programmed sounds. GREAT FOR CLASSROOM GAMES: A perfect tool for quieter game sessions buzzers are loud enough to get the attention of the group; Great for use in the classroom or at home. 4 DIFFERENT SOUNDS: Each buzzer is pre programmed with a distinctly different attention getting sound that makes it easy to identify clearly who buzzed in first. GAMES FOR CLASS & HOME: 4 bright colours make it easy to tell them apart; Press to activate; Great for children ages 3+; Easy to wipe clean. Specification: Input voltage: 3V Recording time: 30 seconds The music source can be customized according to the sound provided by the customer from 2 seconds to 60 seconds. Answer Buzzers require 2 AAA batteries that are not included. Material: Plastic Size Chart: 88x42mm/3.46x1.65inch Package Includes: 4 Pieces Answer Buzzers Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!