Originally Posted by
njkayaker
Why not just use your phone? You can get an external battery pack that would extend how long it would last. There are lots of apps that let you download maps.
That's what I've been doing, using my iPhone and MapMyRide. Still with a phone you need reliable cell service to connect to either Google Maps or MapMyRide, so I was looking for the next level up, something that would work independently (no data plans, no dependency on cell towers, etc.).