I obtained this item new several years ago. I only tested it with my Canon EOS 80D & EF-S18-135mm F3.5-5.6 IS USM and never had a chance to use it, so I am selling it. This Power Zoom Adapter PZ-E1 allows the aforementioned lens, the EF-S18-135mm F3.5-5.6 IS USM, to zoom in and out smoothly and electrically, especially when shooting videos (with two speed settings: Slow/Fast). (Requires 4 AAA batteries. It worked with my Eneloop batteries as well. Batteries are sold separately.) I have reconfirmed that it works correctly with my Canon EOS 80D & EF-S18-135mm F3.5-5.6 IS USM before listing it. (See the photos for the installation image. The camera and lens are sold separately.) Since I have only used it for testing, it is in very good condition. There are no noticeable scratches, and it looks clean. The contacts are also clean without any liquid leakage. (See the photos.) The dedicated case, contact cover (yellow part), instruction manual, and original box are included. Although it is in excellent condition as it has hardly been used, it is still a used item, so please refrain from purchasing if you are looking for a perfect item or are overly concerned about minor details. There are no smokers in my family, and I do not own any pets. To prevent any issues such as product replacement, I kindly request no claims and no returns. By purchasing this item, you are agreeing to the above conditions.