This is a compatibleMC-DC2 remote switch shutter release. It is functionally the same as the Nikon MC-DC2. It is designed to work with the Nikon D90 DSLR camera.This is a mechanicalshutter release. No batteries are required. It is great for those long shutter release pictures where you want to avoidcamera shakes. We use these cords ourselves and found them to be great; especially when the price is a fraction of a genuine one. This listing includes the MC-DC2 and the packagingas seen in the pictures. There is a 90-day replacement warranty.Be sure to add our store to your favorites list!Check out our other items!We are also available on AIM, Skype and MSN to answer your questions and inquiries.