12-channel, WAAS-enabled GPS receiver Built-in electronic compass, basemap & barometric sensor 7 NOAA weather channels & weather alert 24 MB internal memory Transmission range of up to 2 miles using FRS & up to 5 miles with GMRS Polling feature, which allows a user to manually request GPS location information from other Rino® units 14 FRS channels, 8 GMRS channels 8 sub-audible squelch codes per transmission channel for semi-private radio communications External voice activation (VOX) Waterproof to IPX-7 standards—submersible in 1 m of water for up to 30 min Ergonomic design for 1-handed operation Thumb Stick Stores up to 500 waypoints with graphic identification; 20 reversible routes with up to 30 points each with TrackBack® 10,000 trackpoints & up to 20 saved tracks Sends & receives short text notes Requires 3 AA batteries for 14 hours Screen size; 1.4"H x 1.4"W high-contrast LCD display with bright backlighting Dim: 4.5"H x 2.3"W x 1.6"D; 7"H with antenna