Lowrance iFINDERr GO2 The most compact, full-featured, highly-detailed 16-channel compact GPS+WAAS handheld - with 64MB of built-in memory packed full of mapping detail - for such a low price! Don't wait to give it a GO! 200V x 140H pixel resolution2" diagonal display size High contrast Amber LED backlit screen16-level grayscale Precision 16-parallel channel GPS+WAAS receiver Built-in, 64MB of memory preloaded with a background map of the continental U.S. and Hawaii, including enhanced shoreline detail, coastal nav aids, and wrecks and obstructions 1,000 waypoints/1,000 event markers/100 routesUp to 100 retraceable plot trails, with up to 10,000 points in any trail 40 map zoom ranges, 0.02-4,000 miles42 graphic icons to mark special spots Internal back-up memory Weighs 5.36 oz/151.9g with 2 AA batteries loaded (batteries not included) 5.15x2.12x1.24 inches pocket-sized Includes wrist-strap accessory Waterproof up to IPX7 standard Runs on two AA batteries for over 48 hours Full one-year warranty.