Game show buzzers let you turn any lesson into a game and get students actively engaged as you assess them. Four different colours and fun sounds include a horn honk, boxing bell, doorbell, and boing sound. Buzzers also enable students to work on their own while allowing them to signal to a teacher when they need help. Buzzers require three AAA batteries (sold separately) and are designed for children ages 3 and up. Size: 19.8 x 19.8 x 4.8 cm.