Weighing in at 4.25 lbs, the Tablet comes standard with the Microsoft Windows 7 operating system although optionally, consumers can also choose to purchase it with XP or Vista. As a rugged device, the unit is compliant with both IP65 and MIL-STD-810G standards and can survive a six foot drop. It can also withstand the usual rain, underwater pressure up to 100m, dust, spill and shock damage. 14.4" Premium WXGA (1280x800) LED Display (Wide View) Memory 4GB (4x1GB on board) DDR3 1066MHz and interchangeable Preliminary Weight (Starting): 4.25lbs (1.64 kg) with 6-cell battery 6-cell 42W/Hr Li-Ion primary