Matchstick LED Flashlight Keychain - Blow On & Off, Novelty Party Favor/Stocking Stuffer - Bulk Lot of 6. Novelty light that looks like a giant matchstick. Turns on (and off) "magically" with short burst of breath. Attached to a sturdy keychain with a 360 degree swivel. Operates on 3 replaceable AG10 button cell batteries (included and pre-installed). Size : Overall dimensions of the light are 2 1/2"L x 1/2"W.