The Randomizer is a communication aid that plays messages in random order. Modes of operation include single message, jumble (messages play in random order), and eliminator (messages occur in random order, but once a message is played, that message is not played again until all messages have been played). 3 minutes of record time (90 seconds per level) for two separate, easy-to-record activities. The Randomizer has an external switch jack, an external speaker jack and a relay jack for cause-effect. All jacks accept standard 1/8" (3.5mm] plugs). Includes one 9-volt battery. Dimensions: 3.5” x 3.5” x 2.25”; Weight: 10 oz.