AquaFix 406 406 MHz GPS I/O Personal EPIRB Transmits on 406 MHz via the COSPAS-SARSAT satellite system with your registered unique, digitally coded distress signal and 121.5 MHz (SAR homing f requency) Onboard GPS acquires LAT/LON when the unit is activated, your LAT/LON are tran smitted as soon as acquired providing rescue agencies with your exact positio to within 100 meters (110 yards) GPS interface (NMEA 0183) allows you to download your GPS coordinates from a G PS receiver into your P-EPIRB; when activated, your LAT/LONG will accompany yo ur 406MHz signal on the first burst, dramatically saving valuable time for you r your distress message to reach local rescue centers. Smallest and most functional P-EPIRB available; can be easily carried in a pac k or on a life jacket; small enough to wear on deck by yachting racers, crew, solo cruisers, or any marine enthusiast. Removable holster provides functionality, style and protection for your P-EPIR B; allows for multiple mountig options to backpacks, belt, webbing and life ve sts. Full functional self test of internal circuitry, battery power, 406 MHz transm ission, and GPS acquisition. Flat stainless steel antena wraps compactly around the unit for easy stowage; and is redy for rapid deployment. Floats to avoid loss if dropped in water, exceeds RTCM waterproof requirements . Size: 1.74 x 5.71 x 3.03 in. Batteries: Two lithium battery packs with 2,500Amp Hours @ -20 degree C. Non-h azardous; 5 year replacement life (11 year storage). Deployment: Manual Limited warranty: 5 years.