Recording buttons are ideal for simple activity instructions, phonics, speech and language therapy, intervention, self-assessment, treasure hunts and more. Record and re-record instantly up to 10 seconds of clear sound, even in a busy classroom, or flip the switch to lock. Mount alongside bulletin boards, tuck into pocket charts or place on the corner of a student's desk. ø 4.44 cm size fits perfectly in little hands. Requires 3 button-cell batteries each (included). Set of 6 buttons, in 6 bright colours, for colour-coded uses.