Is ideal for small group study and other listening activities. It features a durable ABS plastic construction and a 3" speaker for clear audio. It also features 4 headphone jacks for private listening. It can be powered with the permanently attached power cord or via 4 C batteries. Durable ABS plastic construction. Large 3" speaker. 4 headphone jacks. Operates on AC power or 4 C batteries. Auto stop feature.