So, what does he do? He builds his own timer and provides his schematics online for any other industrious swimmers; (or higher forms of life), that that can build such things. It is also water proof!
I swim with a triathlete group in an outdoor pool at 6AM three days a week. For half the year I can see stars when I start swimming. What I can’t see in the dark is the analog clock to check my pace on 100 meter laps.
To solve this problem I designed and built a portable digital timer with LED display. The 4-digit 7-segment display is large enough to see from 10 feet away so I can read it without stopping. The timer is encased in a transparent and waterproof polycarbonate tube so that I don’t have to worry about it getting wet or falling in the pool.
Doug, you engineer like a "boss" and you have made the "swimming universe" a better place. Though I am too incompetent to build something like this. Perhaps you could sell them?