Brunton Atlas GRS/WAAS Receiver w/Digital Compass & Barometer

Features: Handheld. Internal, Download maps. WAAS enabled. 12 Channels. 1.7 in. x 2.2 in. 4 Level Grayscale LCD Display. Split Screen, MOB (Man Over Board). Waypoint Icons, Address Book. Included Software/Maps. North America Maps, USA Maps. 128 MB. SD (Secure Digital) Card Slot, MultiMediaCard (MMC) slot. Built-in Antenna. 2 x AA Batteries. 10 Hours Battery Life. 2 Years Warranty. Width. 2.5 in., Depth. 0.9 in., Weight. 0.43 lb.