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Used HP 41C scientific calculator with one memory module without a case. Photos are of the actual calculator being sold. Good cosmetic condition front and back, 3 module port covers included. Battery charging port cover missing. Battery power block repaired from corrosion (see photo 3). Battery cover repaired from two corner chips (see photo 4). Everything works as expected, including all 4 module ports. A memory module is included. No user manual, no cables, batteries included to maintain memory. A card reader was used to load three programs into memory for fun, example, and/or utility: (1) ERTHDST - calculates the great-circle distance between any two locations on the earth's surface from specified latitude and longitude coordinates and the direction to begin travel from the first to the second location (see photo for the distance for lat1 30.4506°N, lon1 91.1544°W to lat2 15.1321°S, lon2 30.1156°E of 8594.4962 miles ), (2) HERON - calculates the area of any plane triangle from the 3 sides, and (3) MPG - calculates car mileage at fill-ups from miles1, miles2, and GAL. Program listings and instructions for use are included in case the batteries disconnect during shipment.