Wristwatch Adjustment

Where can I find a timer for use on the ACT / SAT?

*** Preferably, a clock which is not audible or has the volume control. ***** Also, a chronometer wristwatch, not a standard chronometer hand

If your wristwatch stopwatch a delay, then do it! Set it for 25 minutes, 15 minutes, and 10 minutes for each section!

RADO Manhattan Quarter Calendar Set