I picked up one of these recently:
- large, easy to use buttons that don't get stuck.
- no need for a "double-tap" to start it, or to come out of dimmed mode (like, say, a cell phone)
- large. This is not a con for me, I have big hands and I want a large, easy-to-read stopwatch. But it's not small.
- noisy. It has a "beep" feature for starts and stops, and sometimes I just want to do things silently. There is no option for turning that off.
- battery replacement, if necessary, would require disassembling the stopwatch
The great features of the stopwatch for me is that it both counts up times, with a memory for splits or laps, and does countdowns. This makes it handy for hands-free timed workouts such as EDT, snatch tests, or Crossfit-type "as many rounds as possible in X minutes" workouts.