Timer (alarm, timer and stopwatch) by Karl

4.1 Stars out of 5

103 reviews

Rated 5 out of 5
by Benjamin, 8 years ago
One of the only timer addons out there for me. Easy to use and nice sounds!
Rated 5 out of 5
by Firefox user 13904948, 8 years ago
simple and effective.
Rated 5 out of 5
by Firefox user 13878891, 8 years ago