Round recessed spotlight; installation without tools with high quality easy install springs; surface silver, white, black; fixed symmetric radiation characteristic  choice of adjustable - precise due to high quality lens system; variants with symmetric radiation characteristic (UGR < 15) with 4 different beam angles, passive cooling of LEDs with optimised heat sink geometry; COB (Chip on Board) technology for maximum efficiency; no multiple shadows; efficient LEDs with very good colour rendering; binning initial ≤ 3 MacAdam; light colour 2700K, 3000K or 4000K; CRI ≥ 90; L80 / 50000h; degree of protection IP20; PC III; either non dimmable, 1-10V dimmable or DALI dimmable