Ye 'ol K1000 was a solid tank, known for being really tough. The camera of choice of many a first year photo student, back in the day fairly easy to find and cheap, plus lots of takumar lenses out there too.
Funnily enough cycc, but you and I have the same bike computer. Like mine for the somewhat accurate ish altitude climbing recording. The temp gauge tends to read high, but handy also.
Was attracted to this for these functions, still going but the mount has gotten loose a bit and I can knock it off if not careful.
I’m using a Lezyne GPS now but have a whole bunch of mounts (and spare Sigma computers) if you are interested. PM me.