Vivitar's VIV-RC-200/D90 Wireless Remote Shutter Release consists of two parts: a receiver which can be attached to the camera's flash shoe and connects to the camera's cable release socket, and a separate transmitter. The remote can operate at ranges up to 320' (100 m) under optimal conditions, and it features a switch for focusing operation or shutter release. This remote release will reduce the possibility of blurred images since you are not in physical contact with the camera while making an exposure.
Compatibility
Nikon D90 / D3100 / D5000 & D7000
Instant Release
Press shutter release once and take immediate pictures
Multi Exposure
Press the shutter release one time and the camera will take 5 consecutive pictures, or hold down for continuous shutter release
2 Second Release
This will give you the extra time you need to get into the perfect picture position
Long Exposure
Set camera to bulb mode and hold shutter release for 3 seconds, the shutter will now be open, then press the shutter once to release the picture