ACR Terrafix 406 outdoor GPS personal locator beacon

When you're lost in the woods, and you're not in your neighborhood,
who you gonna call? Why, ACR's Terrafix 406 Personal Locator Beacon (PLB) with GPS, of course. The Terrafix 406 broadcasts your exact GPS latitude and longitude coordinates to search and rescue squads that are within 110 yards of you, allowing them to pinpoint you and save your life. The lightweight 12 ounce unit works at temps to -20 degrees Celsius, is waterproof up to 16.5 feet, and has a lithium battery that lasts for 5 years (which allows for continuous emergency transmission for 24 hours).