Cryptochromatic spectacles

The cryptochromatic spectacles are a pair of special tortiseshell glasses [sic] added to Fallout 3 in the Point Lookout add-on.

Characteristics
They provide a damage resistance of 1 and can be repaired with glasses, as well as Doctor Li's glasses and Three Dog's glasses.

Location
The cryptochromatic spectacles are found in the toilet tank in the Homestead Motel's room 1D.

Related quests
The spectacles are used to see hidden color rings during the quest The Velvet Curtain and access the Chinese bunker.

Behind the Scenes
These glasses could be a reference to the glasses that Nicholas Cage's character in National Treasure (2004) find in Independence Hall, and are used to see hidden codes/messages much like these very ones.

Криптохроматические очки