X9 & altitude sensitivity

[relate2]

Here is a quote from the manual for the X9 regarding accuracy of the altimeter which I find strange.

"Suunto X9 calculates the altitude from the current barometric pressure, which is more sensitive and accurate than the altitude measurement with the GPS."

I would have thought it would have been more accurate using the GPS as there is no fluxuations from barometric pressure. I was looking at the GPS X9 instead of the normal altitude suunto watch because of my want to use it in hang gliding, I guess I was wrong.

Any comments?

	Suunto Visit SuuntoWatches.com to see Suunto's full line of wrist top computers and compasses.

	Suunto X9i - Click for more info Introducing the Suunto X9i - the new and improved version of the Suunto's X9, voted "Best Product of 2004" by Fortune Magazine. Now available in two colors, the X9i combines GPS functionality with an altimeter, barometer, compass, and thermometer ... all these instruments, packed into a single watch.