This external flash unit was made for the Kodak Trimlite Instamatic 18 and the Kodak Tele-Instamatic 608. The flash unit installs in the cameras Flip-Flash socket and has a clamp to secure it to the camera (See Photos). It is powered by two AA batteries (not included). This flash has been used and is still in excellent condition. It has been tested to be fully functional as shown in the video. I also have a Kodak Tele-Instamatic 608 camera for sale that pairs perfectly with this flash unit. This item is from a smoke and pet free home.