It amazes me that people on here spend $10 on a bike computer and then complain that it seems cheaply made.  You don't get a Cray supercomputer for $10 folks.  It does exactly what it says, is easy to install and probably not going to ever get stolen because really, what can the black market value of it be, fifty-cents.  It's featherweight, easy to read, auto on/off (really important) and has a nice scan feature where it will cycle through the various functions continuously.  I just generally leave it on speed/odo since my average speed usually reminds me how inadequate I am as a cyclist.