Round shape ceiling surface luminaire made from die-cast aluminium; surface Black Matt; powder coated; matt texture; RAL 9005; opal PMMA cover; PCB 3-step binning; phase-cut dim; light colour 2700 K; binning initial MacAdam ≤ 3 SDCM; CRI ≥ 90; degree of protection IP44; Class 1; light source replaceable by Wever & Ducré or by a professional with explicit authorization;