BD7 450nm Puntatore Laser Blu Impermeabile Penna Laser Immersione Profondità Fascio di 5 Metri
Wave Length： 450nm. Battery Direction： The Battery "+" Is Toward Inside of The Laser Pointer. 1 Blue Laser Pointer. Flare Forms： Plaque-Forming - Circle. The laser IS bright! Laser Net Weight： 245g.