libertysnake
.338 Win Mag
Actually they make color E-Ink phones. Might be your best bet. 62 hours of battery life with FULL brightness. HiSense A5C Color E INK Smartphone
And full color so it's useable for maps. The screen refresh will suck, but who cares if you have good battery life and can use it for comms? Might have to look into whether the battery is replaceable.
And full color so it's useable for maps. The screen refresh will suck, but who cares if you have good battery life and can use it for comms? Might have to look into whether the battery is replaceable.