To activate twist backing clockwise until tight To deactivate twist backing counterclockwise Toys play a crucial part in development of a child Toys as simple as wooden blocks or numbered puzzle develops cognitive and physical skills Complex puzzles remote control cars bubble guns helps learn and analyse cause effects and spatial relationships Babies tend to play more and more with such toys and make themselves happy Children s attitude towards their toys nurtures them big way Specifications . Height 0 62 in . Width 0 62 in . LED Colors Red. Batteries Blinky No Clasp includes 2 replaceable CR927 Batteries