ACR 2774 CAT I/SAT II Epirb - * Patented proprietary electronics package for faster, more stable 406 frequency transmission; full functional self-test including battery voltage and internal circuitry. * Fully enclosed, high density, UV stabilized polyethylene bracket with hydrostatic release. * Hydrostatic release automatically deploys EPIRB if vessel sinks to approximately 13 ft (4m); beacon automatically activates. * World's smallest 406 MHz EPIRB that meets all world regulations. * Built in strobe for enhanced location in poor visibility conditions. * Single, three position switch for easy test and operation. Steady green LED indicates has passed full functional test, flashing red LED indicates unit is "ON". * Transmits on 406 MHz (COSPAS-SARSAT) with your registered, digitally-coded distress signal, and 121.5 MHz (SAR homing frequency). * Can be manually activated; self-buoyant - no external float collar to lose. * Lanyard coiled on recessed spool for non-tangling deployment. * Exclusive, polycarbonate blend designed for maximum resistance to UV and chemicals; maximum durability when exposed to extreme temperatures and shock. * High impact plastic case designed to withstand exposure to UV rays, oil, sea water and raft packing. * Field programmable - built-in vessel code can be reprogrammed by any ACR Authorized Service Center world wide (Maritime/Serialized/Radio Call Sign/MID Protocols, Country Code, etc.). * Product label includes universal test/operation symbols, English and French languages, plus ability to substitute other foreign languages. * 5 year limited warranty. * 5 year replacement life (11 year useful life) lithium battery. * 48 hours operating life at -20°C(-4°F), allowing for monthly self-test for 5 years. Available in Class 1 (-40°C (-40°F). * Size: 17.5 x 6.25 x 5.5 in (44.5 x 15.8 x 14 cm). * Weight: 4.5 lbs (2kg).