Nautilus LifeLine Marine Rescue GPSThe all new Nautilus LifeLine Marine Rescue GPS is less than half the size of our original radio and is incredibly simple to use. Simply undo the latch and open, turn on, remove the red distress cap and press the red button. That's it! Your gps position accurate to 1.5 metres and a man overboard distress message will be broadcast to all AIS equipped ships up to 34 miles away as well as a special DSC message to the marine radio on your own vessel. Your Nautilus LifeLine floats and is waterproof in all sea conditions. Just keep the o-ring clean and forget about it for the next 5 years! Don't get left behind!ADD THE POUCH BY CLICKING HERE!! Half the SizeAIS/DSC TechnologyNo MMSI, Licenses & Registration5 Year Battery Life* (User-replaceable batteries / * Batteries not included)Diver Depth Rated To 425 feet (with cap closed)Transmits GPS Position to Boats up To 34 milesIt Floats! Positively Buoyant* Batteries not included requires two CR123A Lithium 3VAIS Transmit Power - 1 WattAIS Frequency - 161.975 and 162.025 MHzDSC Transmit Power -0.5 WattDSC Frequency - 156.525 MHzMessages - Individual Distress Relay, Distress AlertEnvironmental Temperature Range - -25C - +55CWaterproof Depth - 425 feet (130 meter) sea waterDimensions - 2.9 x 3.8 x 1.5 inch (75 x 97 x 39 mm)Weight - 4.6 Oz (131g) with batteries installed. Batteries not included in the package