|This article is about a/an changer in Choushinsei Flashman.|
Prism Flash (プリズムフラッシュ Purizumu Furasshu): Flashman's transforming device. They transform by shouting "Prism Flash!" When the suit has been formed, they shout "Shut Goggle!" (シャットゴーグル Shatto Gōguru) to close the visors. While the Flashmen themselves are already enhanced due to their previous lives in the Flash system, the suits possess prisms which are the key for enhancing their abilities for combat; when these prisms are removed or destroyed, the suits are useless.
The brace also works as a communicator and the prism on it can be used for a "Flash" maneuver to blind enemies.
At the climax of the Legend War, the Prism Flashes were made redundant when the Flashmen sacrificed their powers with the rest of the first 34 Super Sentai to destroy the invasion force of the Space Empire Zangyack. Resurfacing as Ranger Keys, the Flashman powers would be used by the Gokaigers to assume their forms via the Gokai Change. Ultimately, the Gokaigers returned their borrowed powers to their rightful owners after overthrowing Zangyack.
- The Prism Flash is the first Transformation device whose toy version featured a LED lighting feature.