How do I use the countdown timer on my Armitron Wr330 Watch?
From Time Telling Mode, press 'B' three times to enter Countdown Timer Mode. Hold 'A' until hours flash, then advance them with 'C'. Press 'B', and set minutes and seconds in succession using 'C', ending each step by pressing 'B'. When time is set, press 'A', then start the timer by pressing 'C'.
From the official Armitron Wr330 Watch manual, page 1
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