Tthe BIG Step-by-Step provides: - Better digital sound - 40% more recording time - 25% more battery life. Students who require a larger activation surface will appreciate the generous 5-inch target area on this powerful sequential messaging tool. Record any series of messages directly into the BIG Step-by-Step communicator and press its large activation surface for the first in a series of messages. Press it again and BIG Step-by-Step is ready to play the next message. With 2 minutes of recording time, you can record as many messages as you need.