Echo Visor

The Echo Visor is one of the two visors exclusive to Metroid Prime 2: Echoes, the other one being the Dark Visor. The Echo Visor allows Samus Aran to see sound waves, similar to echolocation. It is mostly used with the Annihilator Beam, and can open Echo Gates. It can also disturb sonic locks, making the item critical in defeating Quadraxis.