Telescope

Binoculars are a piece of equipment featured in the Battlefield series used to call in artillery strikes in Battlefield 1942, spot targets in Battlefield Vietnam, or designate targets for air strikes in the campaign of Battlefield Bad Company 2.

Battlefield 1942
In Battlefield 1942, Binoculars are issued to the Scout Kit. They are used by the Scout to coordinate targets with allied artillery pieces so that they can fire on the target designated by the Scout. Binoculars also provide a helpful means of spotting targets at distance, such as enemy armor or soldiers.

Battlefield Vietnam
In Battlefield Vietnam, Binoculars are issues to every kit except the Engineer in the game. They are used to spot other enemy soldiers and vehicles on the field by looking at the target and pressing the fire key to spot them and warn allied players of the threat, as well as tracking their location for a few seconds on the mini-map and all allied players' HUDs if they are in their field of view. This change to binoculars from their previous use was primarily implemented due to the fact that spotting in Battlefield 1942 was much more complex with using the function keys.

Battlefield: Bad Company 2
In Battlefield: Bad Company 2, Preston Marlowe uses Binoculars in the singleplayer campaign during Cold War, Heavy Metal and High Value Target to call in air strikes on a Russian T-90, four 9M133 Kornet positions and a ZU-23-2, respectively. Preston and Sergeant Redford later seen using Preston's binoculars during a cutscene as Bravo Two looks over the Battle of Medellín in Zero Dark Thirty, just before the Scalar Weapon is tested. In-game, they can be accessed with the Q/Select/Back buttons for PC, PlayStation 3 and Xbox 360, respectively.

Trivia

 * The binoculars in both Battlefield 1942 and Vietnam are identical visually and in practical use.
 * In Battlefield: Bad Company 2, Preston's binoculars use the same model of the LZ-537 Laser Designator that is unlockable for the Recon Kit in multiplayer and is used to call in mortar strikes.