any Cat Eye wired cyclometer
I agree with the wired computer (or cyclometer if you wish). But I tried a Cat Eye and was not pleased. Every time the battery was disconnected, it "forgot" the odometer reading and the calibration setting. (The calibration setting tells the computer the circumference of your tires so it can convert pulses into miles.) Ditto when I pressed the reset button -- even if I pressed it very briefly. I found that to be not very useful. Sometimes I would drop it (hey, things happen) and it would reset. I don't know whether the battery contacts lost contact momentarily or the reset button was somehow activated. Also, the model I purchased required an unusual battery that I could only find in bike shops, and only at an unreasonable price.
I switched to a Sigma. The battery is a common one found anywhere. It lasts over a year and isn't very expensive. It's operation is more friendly. The digits are bigger (important for me, but not necessarily for everybody.)
Maybe it was just the model of Cat Eye I tried. I'm pretty sure I won't find out for sure. I'm pretty happy with the Sigma.