Stealth Boy (Fallout 3)

The RobCo Stealth Boy 3001 is a personal stealth device worn on one's wrist in Fallout 3.

Characteristics
It generates a modulating field that transmits the reflected light from one side of an object to the other. The end result makes the wearer almost invisible to the untrained eye.

Locations
All random-loot safes and ammunition boxes will have a chance of containing a Stealth Boy. Fixed locations include:

Bugs

 * There is a glitch wherein activating a Stealth Boy causes the hair mesh of a character not wearing any headgear to appear on the Pip-Boy, or in random other locations near the character, while in 3rd-person view. This does not affect whether enemies will detect you.
 * There is a glitch where activating a Stealth Boy and then traveling to D.C. ruins on the Duchess Gambit, the effect will still be active as long as 1 in-game hour.
 * Occasionally, if you use a Stealth Boy and then open a save previous to using it and put it in any container (even owned ones), then walk out of the building, it disappears.