4537226 Light Up Brick Key Chain

4537226 Light Up Brick Key Chain Key Chain set released in 2008. The set features a light-up 2x3 brick attached to a key chain.
== Description ==
This set is comprised of a key chain with a red Power Functions light brick attached. When the button on the top of the brick is pressed, the brick lights up.
== Notes ==
* This set was also released as the 852309 Light Up Brick Key Chain.
Category:4000000 sets
Category:Key Chains
Category:2008 merchandise
Category:Exclusives
Category:Power Functions