Mcmurdo Fastfind 210 Gps Personal Location Beacon . Get found fast with a PLB as small as a mobile telephone no subscription fees required. Transmits a unique emergency message identifier to pinpoint your location to within ten feet anywhere in the world in as little as five minutes. Weighs just 5.3oz. as small as an average mobile phone No subscription fees required Built-in GPS Unique flashing SOS feature Built-in operational indicator lights Global alert to Cospas-Sarsat satellites 406MHz transmitter Frequency 406.037MHz 121.5MHz homing frequency Positional accuracy to within 100 feet 24-hour transmit time Waterproof to 32 feet10m Complete with lanyard 5-year battery life Auxiliary flotation pouch available soon Fast Find will not float on its own User ManualNOTE In our 2010 Annual Catalog the Fast Find 210 was incorrectly identified as being not waterproof. This was a mistake the Fast Find 210 is very waterproof as indicated in the chart above. West Marine regrets this error.Technical Fast Find 210 Category 2 will not float Programming Optical infra-red link Operation Three-stage manual operation Temperature Class 2 20 C to 55 C 4 F to 131 F Battery type and life 9V Lithium 5 years storage then 24 hours operating Sealing Temporary immersion to 10m 30ft. for 5 mins. IP 58 IPX7 Weight 150g 5.3oz. Altitude MIL-STD-810E 10000 feet Antenna Deployable flexible vertical blade