This is a stand I created because I didn't want to buy one and I wanted to be able to see the time on my watch while I was laying in bed. I needed it to have magnets on the bottom so it would stick to my filing cabinet that I use as a night stand. I designed this to work for a 4th gen 44mm watch. Will it work for other sizes and generations? I have no idea. Be aware that once you stick your charging puck in there it's hard to get back out. I could make a new one that has a hole in the back so you can push it out easier, but I'm pretty lazy so I'm not gonna do that.