Timeclock for home poker use

[Rushmore]

Can anyone suggest a clock of some sort for tracking actual time playing? Will a chess clock suffice? I wouldn't think so.

See, Pokertracker and I are on the outs. I play at UB a lot, and don't feel like splitting the atom to import HH's, etc., so etc. etc.

Therefore, I'd like to have some sort of device I can have on my desk that I can just hit a button to start, stop, and reset. That way, at the end of my grueling work day, I'll have some sort of idea about exactly how long I was in action at the tables (I come and go a LOT), and can log accordingly.

I have considered a chess clock, a stopwatch, and one of those darkroom clocks, but I have found a problem with each.

Maybe I'm wrong.

Help. Please help. I'm missing something.