The we-vibe 3 claims to be 40% more powerful than the we-vibe 2. The 3 is also remote controlled which means that you don't have to fiddle around with the toy anymore as there is a small, hand held, wireless remote. It is also waterproof (2 was not). I'm not a massive fan of it, but I know a lot of women (and their partners) who swear by it.