DESC: The eTrex Legend Cx is loaded with the same popular features found in the eTrex Legend C, including sunlight-readable color and advanced GPS routing capabilities — all in a waterproof design. In addition, it comes with a blank 32 MB microSD card for storage of optional map detail. Download maps directly to the card or purchase microSD cards preloaded with MapSource® Topo and inland lake maps, BlueChart® marine cartography, and City Navigatorâ„¢ street maps.