If you’re looking for a watch that can handle the outdoors and track your activities then there are a few names that stand large. One is Garmin and their Fenix3, and the other is Suunto specifically their Ambit line.
The Ambit3 Peak isn’t really a new watch, but I’ve recently come across it as likely one of the best watches for long, long days in the mountains. The reason it eclipses the Fenix3, battery life.
Where the Fenix 3 gets up to 50 hours the Ambit3 Peak gets up to 200 hours though with less accuracy to hit that 200 hour mark. Even at 20 hours for the most accurate tracking that’s a long time between charges.