Record any series of messages directly into the BIG Step-by-Step communicator and press its activation surface for the first message. Press it again and BIG Step-by-Step automatically steps to the next message. With two full minutes of recording time, you can record as many messages as you need, divided any way you like. BIG Step-by-Step features a 5-in/12.7-cm activation surface and is recommended for persons who require a larger target area. Powered by a replaceable 9 volt battery, BIG Step-by-Step never needs charging and can last for weeks or even months on a single battery.