I checked the review on Amazon, and it seems OK to me. The only problems I could find were not being able to set the time, the mounting being odd, and having to push a button (oh no!) to turn it on. I found clearer instructions on how to set it up here:
http://www.totalbike.com/reviews/B000FIE3QE/Computers/
I also found this:
amazon
Doesn't show the time, but the main display
looks large. Could just be the picture though.
Good luck!