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One hour Stopwatch mk3

This is a compact stopwatch that counts up to one Hour. The stopwatch plays an alert every minute and a short melody every 10 minutes.

Controls:
-You activate it by switching on the green switch on the right side of the clock.
-You pause the stopwatch by switching off the green switch.
- You reset the stopwatch by pressing the red button over the green switch on the right side of the clock.