Point synchronous mechanism for adjusting the seat and backrest inclination, individually adjustable to body weight, lockable several times. Infinitely variable seat height adjustment. Futuristic design. Easy-care genuine leather cover. Headrest adjustable in height and inclination. Multi-dimensionally adaptable Vario backrest thanks to innovative honeycomb structure. Backrest height adjustable in four positions. Height-adjustable lumbar support. Seat depth adjustment. Seat tilt adjustment. 4D armrests with soft pad support: horizontally, vertically, width, and radially adjustable. Shapely base in polished aluminum. Unbraked multifunctional castors. This article is delivered disassembled and can be assembled in a few simple steps. No assembly is required for gas springs, chair casters, footrests, etc.