This is a pretty great idea: An emergency cell phone that can last 15 years on one AA battery!  Features:

* Waterproof bag is floatable and submersible, with talk-through containment and extreme temperature operation, provides you a communication lifeline when all else is potentially destroyed.
* Up to 10 hours of talk time means you have plenty of connectivity hours to last you your whole trip on one battery.
* Keeps its charge for up to 15 years SpareOne can hold its charge, if unused, for up to 15 years. Battery included.
* Extreme weather operating range (-22F to 140F) is far greater than that of a smartphone..
* One-touch, large emergengy services button is ideal for daily emergency and medical situations, no SIM required.
* Easily pre-program 9 important numbers and document on menu sticker provided.
* LED Torchlight on top providing up to 24 hours of continuous light makes this phone several tools in one.
* Auto text reply means that if anyone sends you a text, SpareOne will reply with an automatic text response informing them that you cannot read text messages and can be reached via phone calls instead.
* location information

http://spareone.com/

Seems to me to be a handy phone to keep in the car or take hiking/biking/camping

Source: Gizmodo http://gizmodo.com/5973727/the.....ck-and-location-data