Suffering from tendinitis repeatedly, I have to use this type mice. I tried this one, my wireless intellimouse who made the soul. I was surprised by the price much cheaper saying I was taking a risk. In fact the position is similar and therefore avoids the pain. Only small problem, I feel that it is not equipped with a standby system as logitech, so ca consumes battery. We must therefore think of it off, which does not bother me because I use it all day. It's a reflex to take.
