Looking for an altimeter watch.  Really only need 2 key functions for my use.  Tracks distance and altitude.  Battery life for a few days minimum without charging also because will use for backpacking.  My goal is Mount Whitney this year and have already applied for lottery permit for dates.  I was looking at the Garmin Instinct Solar GPS Watch.  Seems to have good reviews but lots of functions I do not think I would need and at $400 little pricey but not afraid to spend it.  Was trying to find something cheaper but reviews for cheaper ones all had mixed reviews.