Super portable GPS
When the press release about Garmin’s new marine-oriented Quatix sport watch hit my inbox, I opened it with lukewarm enthusiasm — but the more I read about it the more excited I got.
Two basic advantages of a watch with built-in GPS are that you don’t have to set it manually when you cross into another time zone and it can be accurate to within about a billionth of a second or, say, within one second every 30,000 years.[…]