Create excitement in teacher-led review sessions about any topic. Program in your own questions about math facts, spelling, science and more. Playful sounds and LED lights keep students focused. Easily control response times, sound effects and volume. Features 2 game play modes. Includes Activity Guide. For up to 6 players or teams. Requires AC Adapter, not included, or 4 AA batteries. Student wireless buttons require 2 AAA batteries, not included. Wireless teacher controller requires 3 AAA, not included. Extra Students Button Set includes: Includes 6 extra pods, 1 of each color.