Usage Tips:Interactive Fun: Includes 4 colorful buzzers (blue, green, yellow, red), perfect for group activities and team games, each buzzer lights up and makes a unique sound, adding excitement and clear identification to each player's response. Easy to Use: Simply press the top of the buzzer to activate the light and sound, convenient for children and adults. Each button requires two AA batteries (you need to buy them yourself), please note that the buzzer already has four different sound effects and cannot record other sounds. Intimate Family Time: answer buzzer is a great grab toy, especially for family parent-child games such as questions and answers, voting, debates, etc. These buzzers help children focus while learning and communicating, and are a great way to improve their responsiveness to any classroom activities or games! Safe and Portable: These buzzers are made of high-quality and sturdy materials to durability and resistance to damage. Convenient to carry, they can be easily taken to different places or classrooms. Fun Gifts for Kids: You can use them as and fun gifts for children on birthdays, Halloween, Christmas, and other occasions. This button provides a lot of unexpected entertainment and interaction, bringing them endless fun. Colour:As Shown Material:plastic Power Supply: 2 x AA batteries(Not included batteries) Package Contents: 4 * Game Buzzers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.