[Trevor]

You are actually speaking of the S6
http://www.suuntowatches.com/s6.htm

The main difference between the S6 is that is has a Slope/Clinometer. Perfect for skiers and snowboarders.

While the X6 does not have this funtion, this watch is geared more towards cross-training.

Hope this helps

	Suunto X6 - Click for more info Just when you thought a sports watch couldn't get any better, Suunto introduces the X6 HR, X6 HRM and X6-HRT. These are truly the next generation in sports watches, packed with all of the technology that Suunto enthusiasts have been craving. Designed for Cross Sports applications, the X6 writstops are functionally very similar to the Suunto X6 - but with the added benefits of a heart rate monitor.

	Suunto S6 - Click for more info Suunto watches are a favorite piece of gear among downhill skiiers, snowboarders, back-country guides, heli-skiiers, and other snow sports enthusiasts who are serious about their time on the snowy slopes of the world. For skiiers who stick mostly to the ski hills, the Suunto S-Lander altimeter watch offers the abiity to easily keep track of total daily vertical and the number of runs skied. For those who want even more from their watch, there's the Suunto S6. It was especially designed with downhill skiers and snowboarders in mind - the "S" stands for "Snow". The S6 includes an inclinometer, altimeter, barometer, thermometer and compass. This powerful array of functions means that your S6 can help minimize the risks involved in moving around the mountains, while also providing you with knowledge necessary to improve your riding.

	Suunto Training Effect watches - Click for more info More than a heart rate monitor, Suunto's exclusive Training Effect feature tells you whether you're training too little, too hard or staying within the zones for optimal improvement.