Junk... Don't Waste your $. Manufacturer can't be contacted, warranty claim ignored.
Jim Siggins "Diamond Jim", Amazon
3 July 2014
Summary: The mouse operated for about 45 days then went completely dead. I changed USB ports, batteries and rebooted numerous times. I tried to contact the manufacturer but there has been no responses to any posted inquiries for over a year. They must be out of business and the product should have been advertised as discontinued with no warranty. Very misleading produt information. I am registering a formal complaint with Amazon.
Summary: I have a problem with carpal tunnel syndrome in my wrist and this mouse is the most comfortable thing I've used in years. I spend virtually all day every day using a computer for my job and I've noticed a significant improvement since I started using this mouse.
Summary: This mouse was a bear to operate. And by bear, I mean it was like trying to get an actual grizzly bear to operate your mouse for you. If you have come across a grizzly bear and asked it to do some remedial computer tasks, then you know what I mean! The concept was a nice idea, but the execution of reality simply does not do what you think it should do.
Summary: The wheel lost its functionality after using it for about 4 months. I had been a happy customer until then. Without functional wheel, I felt like a caveman trying to move my cursor to the right of the screen and scrolling.
It would have been 5 stars...until it stopped working
Virgil "Virgil", Amazon
28 October 2013
Summary: I'm not sure what the deal is but there are enough reviews here to let me know that quality control seems to be an issue with these things. Mine stopped after several months. When it does work it's an effective product, the tilt feature was quite good in relieving stress on my wrist. It looks like somewhere in their production line they went with a defective or cheap part that seems to result in a higher than acceptable rate of failure. Too bad it's a very good idea.
Summary: I bought this mouse because my wrist was started to become irritated from being stationary. I picked up this little mouse and loved it. The motion was much better, not to mention it was sorta fun to see the reactions from other people when they attempted to use it and realized what it was. The battery life was good and it did what it was supposed to. Gradually it started having issues - you had to REALLY mash down the left click to get it to respond.
Summary: This is my second Smartfish mouse which I readily bought (very comfortable) when I thought (stress that word) my wheel had stripped on the first one from use over the years now, however.... when the second one arrived, brand new out of the box, I found out that it had the same issue: the wheel moves randomly or... not at all? It's best described as erratic to the point I don't use it (can't)...