Record any single message up to two minutes in length directly into the BIGmack communicator and press its activation surface for playback. Connect a toy or appliance for additional motivation. With its large, 5-in/12.7-cm activation surface, BIGmack is an excellent choice for persons with visual impairments and persons with physical disabilities who require a larger target area. Powered by a replaceable 9-volt battery, BIGmack never needs charging and can last for weeks or even months on a single battery.