The Musical chain switch is ideal for developing the concept of cause and effect. Run your fingers through the strips of metal beads and gain one of 8 selectable musical rewards: the volume is adjustable. Whilst the music is playing the switch is operational. 2 choices of switch operation are available - momentary & latched, requires 1 PP3 battery and comes with a 2m cable fitted with a 1/4" jack plug. Can also be used just as a musical reward