Main technical parameter: Out size(L*W*H): 520*500*935mm Seat cushion heigh: 355mm Seat cushion width: 485mm Seat cushion depth: 490mm Backrest height: 630mm Backrest width: 485mm Backrest elevation angle: 41? Front&back sides angle: 65mm Height adjustment: 40-130kg Horizontal adjustment: front150mm--after80mm