Game show buzzers let you turn any lesson into a game and get students actively engaged as you assess them. Four different colors and fun sounds include a horn honx, 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. # Pieces In Set: 4 Number of Batteries: 2 Features: Sounds Learning Skill: Sights + Sounds Power Source: Battery (not Included) Recommended Ages: 3 Years And Up Measurements: 7.8 Length/Inches, 7.8 Width/Inches, 1.9 Height/Inches Assembly: Assembled Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported