Looking for stopwatch recommendations.
For lab I run we need very simple stopwatches, just push button to start and push button to stop. We don't need laps or a clock or alarms.
Waterproof would also be good, and the cheaper the better, as long as it's still reliable.
I bought some over the summer to replace ones that had walked off and the new ones which I got from a scientific supplier are so badly made the start stop buttons don't work reliably.