All the power of a 12 parallel channel GPS receiver in a palm-sized package / Waterproof / Stores up to 500 waypoints All five buttons are placed on the sides, for simple, one-handed operation that doesn't obstruct your view of the display Bright yellow case makes it easy to locate in the boat or backpack And the eTrex is waterproof, so a splash or dunk is not a watery grave for the eTrex The high-performance, GPS receiver runs 18 hours on two AA batteries Even under canopy forest conditons, the eTrex maintains a tight satellite lock Stores up to 500 waypoints with graphic icons Exclusive TracBack feature provides a reverse course home more info