these are the solid red joy-cons that came with the Mario Odyssey Switch bundle. I only had them for about two months when I noticed that the left joy-cons battery life is only about an hour on full charge, I had primarily only used these in handheld mode so I had no idea of knowing before. I looked up that maybe the joy-con needed an update so I updated all my joy-cons but the left one still only lives for about an hour. It's frustrating when I have four people playing a game and we have to drop somebody because of it. I just wish I'd realized it when I had the chance to exchange them. Now I'm just stuck with it. All other features and functions of the joy-con work fine.