The Spare One Emergency Phone is a clever — if expensive — preparedness option. The manufacturer claims this cell phone will last for up to 10 hours of talk time on a just single AA battery.
In an emergency, you have 911 access or pop in a SIM card from another phone to get full cell phone capabilities. It comes with a waterproof pouch and is touted as being more reliable in extreme temperatures than most cell phones.
And for $99, it had better be.