Liven up family games nights with these flashing buzzers. Games-show; buzzers can turn any lesson into a game. Ideal for tests and quizzes. Interaction actively engages students. Buzzer buttons light up when pushed. Four sounds: siren, charge, laser and buzzer. Buzzers measure 9cm diameter. Contents: 4 x buzzers. 1 or more players. Batteries required: 2 x AAA (not included). For ages 3 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult. This toy does not provide protection.