Mk102 mod 0, battery operated, portable, input voltage 115v ac, 50/60 hz, single phase, unit to be charged 14-16 hours before use, used on versatile exercise mine mk74 mod 0, item is 13.54 in. Lg., 8.74 in. W., 18.90 in. H., wt. 34.00 lbs, unit is self-contained in metal (sealed) case, no overpack required