As used by the parents in our sensory classes these brightly coloured wands are available in four different handle colours : Pink, Blue, Green or Yellow. 
Each wand is appropriately 13 inches long, has 3 functions and 7 fibre optic colours that flash and blink when you press the button. 
IMPORTANT - these are not toys. These are for adult use only and not for children. 
The handle contains 3 AG3/LR41 button batteries ( batteries included and replaceable ).