Jim & lil wrote:
Hello,
I have a Hydropool which is a swimming pool that shoots a water
jet down the center and you can swim against the current. I swim with
a face mask and snorkel as I find it too hard to turn my head for a
breath of air (broken neck a year ago) so am looking for a clock that
will work under water. I want to be able to suction cup it to the
floor of the pool so I can time my swims... I have googled this to
death but can't find anything...anybody ever seen or heard of
this?...Thanks... Jim

How about an old fashioned timer switch, like the ones for bathroom fans, and a
light placed where you'd see it from the water. Twist the switch to your desired
time, jump in, and swim till the light goes off. The common ones go up to an
hour, others will work longer.