This PLB features the same reliable signaling technology that has saved more than 28,000 lives since 1982! The buoyant AquaLink Personal Locator Beacon (PLB) broadcasts a unique registered distress signal that not only tells rescuers where you are, but who you are, and then lets them "home in" on your location with its built-in, super bright LED strobe light that increases visibility. Get found fast with outstanding accuracy The AquaLink broadcasts a unique registered distress signal that sends your identification and location to rescue units. And, with its built-in GPS, the AquaLink PLB fixes your position to within 100 meters. A powerful 406 MHz signal relays your distress call to orbiting satelites to help rescuers receive and pinpoint your location even faster! Shine a spotlight on your location Though its incredibly accurate, and 100 meters is a pretty impressive zeroing in of your location, rescuers still need to spot you—especially if its dark or your location is socked in with dense fog. Thats where the AquaLink PLB helps guide rescue crews straight to you. Its homing signal and integrated continuous flash LED strobe light mark your exact location. Self-test feature confirms PLB ready status Performing a full functional self-test of the PLB's internal circuitry, battery voltage and power and 406 MHz transmission gives you the peace of mind knowing your PLB will work the moment you need it the most. Built-in GPS acquisition test mode allows you to test GPS functionality up to 12 times over the life of the battery. Activation Method: Manual GPS: Built-in 66 Channel Frequency: 406.028 MHz/121.5MHz Battery Life: Exceeds required 24hrs @ –4F (–20C) Ship: FHAZ (FedEx Hazardous) only Typical Performance: 35hrs @ –4F (–20C) Dimensions: 2.25" x 5.88" x 1.49" Strobe: LED Strobe Weight: 9oz. with lanyard Waterproof: 16.4' (5m) @ 1 hr., 33' (10 m) @ 10 min. Warranty: Five-year limited NOTE: Currently only for sale in the U.S.