Introduced about 2004-5, this wacky IWC GST-line Aquatimer had a second minute hand that you could start and fly-back as necessary to time longer intervals than seconds.
I toyed with getting one but I couldn't figure out WHY and HOW I would use it. Apparently the confusion was widespread and it soon disappeared from the market.
The pusher, crown, winder arrangement was confusing too!

I forget what the rocker switch at 8 does.
There are a few on eBay looking for a good home...
Cazalea