I have confirmed that the "MANUAL ON" button and the "AUTO ON/OFF" button can be used to wind the winch. I haven't been able to confirm the operation of the other buttons as I'm not sure how to use them. I used this to wind a wire rope as an anchor winch for boat fishing, using a 5kg anchor. The boat is 11 feet long. The wire rope is approximately 1.0mm thick. It easily winds up a 5kg anchor. Over 100 meters of wire rope is wound on it, but I don't remember the exact amount. I plan to ship it via Letter Pack Plus, so the size is very close to the limit. Please note that the handle will be removed and shipped in simple packaging as shown in the 20th image.