Nikon MC-DC2 Remote Cord Compatible with D90, D5000, D7000 and D3100.

Remote shutter release cable. Plugs into the accessory terminal of specific Nikon SLR cameras and allows the shutter to be released without making direct contact with the camera body. Use of this cable can help avoid camera shake when shooting with a tripod, and it can be used to activate long exposures (bulb).