Stealth Boy (Fallout: New Vegas)

The RobCo Stealth Boy 3001 is a consumable item in Fallout: New Vegas.

Characteristics
The Stealth Boy is a personal stealth device worn on one's wrist. It generates a modulating field that transmits the reflected light from one side of an object to the other, making a person much harder to notice (but not completely invisible). The duration of the effect is 2 minutes, about a standard game hour. Having Lily as a companion doubles the duration of the effect, for a time of up to 4 minutes. If you use an additional Stealth Boy when a previous one is still active, the duration of the stealth effect does not replenish - it 'stacks', so the effect will last two hours.

While sneaking with a Stealth Boy activated, the only ways to be discovered are to fire a loud weapon, be heard by the enemy or physically bump into an enemy.

Locations

 * One can be found in the Goodsprings schoolhouse, in a locked safe (Lockpick 25).
 * Another is carried by Joe Cobb.
 * Several can be found at the REPCONN test site.
 * One can be found inside, next to the dead nightkin near the front door.
 * Another can be found in the basement, on one of the tables in the room with the sign reading "Food".
 * Veteran Atticus in the Caesar's Legion safehouse can give two to the player for free, each time they encounters him there during his visits.
 * The repeatable side-quest Caesar's Favor can provide a random supply of Stealth Boys each time, sometimes in very large quantities ( of up to 95). A high reputation (liked or idolized) with Caesar's Legion may be required.
 * One can be found in the middle of Jack Rabbit Springs, beside a skeleton found lying near an upright post visible on the hillside.
 * Approaching the cattle pen at Brooks Tumbleweed Ranch reveals a nightkin who offers to sell you a 'wind brahmin' (a tumbleweed) for all your caps. The nightkin carries a Stealth Boy in his inventory.
 * One can be found in the REPCONN headquarters behind a locked door (Lockpick 50) in a container on the top floor.
 * With the add-on Old World Blues, passing the "Robot Compliance Test" to upgrade the stealth suit Mk II at the X-13 Research Facility will yield a Stealth Boy in the reward safe. This test and three others can be repeated and give random rewards each time, including Stealth Boys.
 * In the nightstalker test area of the X-13 Research Facility, shooting the forcefield in the ceiling of the small room with the Strange Still with an upgraded sonic emitter will drop a Stealth Boy into the room.
 * Stealth Boys may randomly spawn in ammunition boxes.
 * Many can be found in the footlockers at Camp Golf