OnlyStopWatch is an accurate countdown timer that includes milliseconds and allows starting/stopping via predefined hotkeys.
There isn't anything complex involved here, just a desktop watch for counting the time that can help you optimize your processes, jobs, or whatever needs to be timed. It includes some basic features like window sizing, color attributes, always on top, shows the hour, among a few others. You can also control various aspects from either the dropdown or via the predefined hotkeys, which are clearly visible at the top of the clean and straightforward interface.
OnlyStopWatch can be used as a countdown or an accurate stopwatch; it provides access to five system sounds to alert you of the end of a count, but a visual aid would be a welcome addition. Perhaps this feature will be added in a future release. But that said, it is a reliable timepiece that is easily deployed and utilized.