The GlobalFix PRO with an internal GPS quickly and accurately relays your position to a worldwide network of Search and Rescue satellites, reducing search time and increasing your chances of survival. Internal GPS and proven rescue technology: The GlobalFix PRO broadcasts a unique registered distress signal that not only tells rescuers where you are, but who you are. The internal GPS will automatically turn on and acquire your position upon activation and then utilizes a powerful 406 MHz signal to relay your distress call to orbiting satellites. As local Search and Rescue is deployed, a separate homing signal and integrated LED strobe light guide rescuers to your exact location.Full self-test program: Performing a full functional self test of the GlobalFix PRO internal circuitry, battery voltage & power, and 406 MHz transmission gives you the peace of mind knowing your EPIRB will work the moment you need it the most. ACR Exclusive: Built-in GPS acquisition test mode allows you to test the internal GPS receiver to ensure its working properly.GlobalFix PRO offers the very latest in marine electronic lifesaving technology:Highly visible LED strobe is energy efficientInternal 66 channel GPS for a fast cold startHigh efficiency electronics for performance you can count onProfessional grade design is engineered, tested and built for years of abusive marine useErgonomic, compact design; smallest, most feature-rich EPIRB availableSpecifications Frequency: 406 MHz with 121.5 MHz homingActivation: Manual release (Category II)Battery Type: Class 2 (non-hazmat) lithium battery Battery Life:6-year replacement life, 65 hour operational life Strobe: White, 1 effective candela, 20–30 flashes per minute GPS: FastACQ 16-channel receiver Material: High-impact UV-resistant polymer Waterproof Rating: Waterproof to 33' Dimensions(without antenna) 7"H x 4 1/4"W x 3 5/8"D Weight(Beacon Only): 20.5 oz.Approvals: Cospas-Sarsat, FCC, MED, IC Acceptances: USCG Meets: GMDSS, RTCM,