Bio Compression Systems Model SC-3004 Sequential Circulator with Calibrated Gradient 5-1/2" H x 12" W x 8" D, Weight 6lbs, Pressure Range 0 to 125mm Hg, Electrical Rating 120 VAC, 60 HZ, .5 A, Cycle Time: 18 secs/Chamber, Bi-lateral Operation, Inflation:7