Feature 1.The full-electrically powered chair controlled by hydraulic system guarantee the high safety. Use practically and noiseless. 2.The back of chair can be on position of 180° and chair can make 360°revolve. 3.Doctor can choose the best position in demand. 4.With touch button control and have a return function. Specification Power:AC220V,110V,60/50Hz Consumption power:350W System:Hydraulic Drive Mechanism Up-Down:530mm-730mm Reclining:Full-electrical 90°-180° Rotation:By Manual (360°) Dimension:840*640*530-730 mm (L*W*H) Weight:128Kg