Well, there's good news and bad news. First, the good news: yes, they have watches that incorporate GPS.

The Bad news: That gps is mainly used to keep track of the distance you cover and possibly to point you to your next waypoint or down your backtrail. If you want one that points you in a direction. . .well, they're rather expensive. For example the Suunto X10 will do most of what you need

The primary problem comes from the size of the face of the watch. . .you won't have enough space to use any readable map.

But, even some of the watches have separate GPS units that you wear elsewhere on your body.

The Suunto runs about $650. For that, you can buy a watch with a compass that is solar-recharged, has all the other bells and whistles. . .and a whole bunch of maps.

Or, you can go with a larger Garmin Foretrex 401 Wearable GPS. It's quite a bit larger than a watch and has none of the watch functions.

Personally, I don't much care for the reduction in size and abilities of such a small GPS. Spend $150 on a good Casio Pathfinder and get a regular GPS. Yeah, you'll have to open your pocket up or get into the pouch, but you'll have a lot more options with such a combo.

Just my opinion, worth exactly what you paid for it.

'nut