Guys,
I finally found a countdown timer that has a large display, audible alarm and fits your hand nicely. It is by EPIC SPORTS a Robic model SC-522, $10.99, $2.99 shipping. It has a neck strap and for me allows me to see the time left for the flight. This is handy for short test flights with electric's as you can set the flight time. I know you could use the stopwatch and do the count up, but for me I like to see what is left. Works well.
Best, DennisT