Vertical Mouse 2
I must admit I never saw Vertical Mouse I but I’m guessing it had a similar concept to this latest creation. The buttons on the Vertical Mouse are positioned in such a way that you need to hold it in a handshake type of position, which is supposedly comfier and prevents the need to twist the lower arm.
It would be interesting to give one a go but I certainly wouldn’t want to switch without having a serious test surf first. If you can read Korean you can find further info (and order) over at Amazon.