The Gen 3 SPOT emergency locator is on sale for half price. It's a personal decision whether and what to carry for emergencies, but for those so inclined it is a great item. The most important thing , if injured or in dire straits, is the "SOS" function, which brings help. It has other functions as well, like tracking and limited communication via a couple of preset messages. I personally wouldn't be without mine on the bike or the boat. Check SPOT SATELLITE MESSENGER :: HOME PAGE
- you can buy from a retailer or their website.