The Janus Anti-shock by Zini is a hands-free prostate massager with a plastic frame and silicone coating. I feel a bit bad comparing the Janus to Aneros' products, but I feel that it's so obviously derivative it's hard to avoid. I have to say that I liked the material better, and certain elements of the construction were nicer. It did not manage to reach my prostate, but I that may be remedied by getting a bigger size.
"Live long and prostate"...love it!