-Fitted with NON-HAZMAT long life batteries -7 year battery life -7 year warranty -Typical accuracy: MT410G: <100m MT410: <5km -High visibility strobe light -Unique patented technology- no warm up period -Featherweight, compact and robust construction -Digital 406 MHz, 5 Watt transmission plus 121.5 MHz homing signal -COSPAS-SARSAT worldwide operation -National & International approvals -Sealed waterproof design (exceeds IP67) -Retention strap and fully buoyant design reduces risk of loss -Complete with protective carry pouch The current 121.5/243 MHz analogue COSPAS SARSAT service will be terminated in February 2009 and only the 406 MHz digital beacon signals will be processed hereafter. NOTE: A PLB is not a substitute for a 406 Mhz Marine EPIRB. Where Australian & International Law require a 406 Mhz EPIRB to be carried, this product does not meet these requirements. For more information on EPIRBS and PLBS's be sure to read the ExplorOz EPIRB Article - http://www.exploroz.com/OntheRoad/Communications/EPIRB.aspx