Measures 12" Computer laser map of Chesapeake Bay & Area Nautical Compass Light Blue Color on Wood for Water Mapping and sea depths Noted Names on Map James River Norfolk Virginia Beach Richmond York River Washington DC Baltimore Seaford Ocean City Hampton Rehoboth Salisbury Crisfield Annapolis Alexandria Chestertown Havre de Grace C& D Canal Cambridge Easton Hog Island Bay Chesapeake bay Cape May Atlantic Ocean Baltimore Cut away Numbers Very GOOD Condition Quartex Battery Clock Movement Weighs 1.6 lb s Ships 3 lbs Ground Advantage