The Rino 130 has all the benefits of the 110 and 120 plus an electronic compass, altimeter, barometric sensor, weather receiver for seven NOAA weather channels, and 24-MB internal memory for loading MapSource detail. The integration of two-way radio and GPS enables users to transmit their position allowing others to navigate to their position. The 130 also has a polling feature which allows a user to manually request GPS location info from other Rino units. Sends/receives short text notes for quiet communication. The Rino 130 offers a detailed basemap of No & So America and accepts downloads from MapSource CDs and comes with a PC interface cable. Waterproof.