... 4.OEM offer ceiling spotlight operating voltage:12V max. 50Wlamp: MR16 Gu5.3color: white, black, chrome, satin chrome, brass, gold, ... grey, etc. Light source 12V/MR11 1×Ma×35W 12V/MR16 1×Ma×50W Exterior size 65mm 80mmOpening size55mm 70mmColor conventional ... free,no noise,stable performance4.anti-rusting,non-fading5.suitable for hotel,shopping centre,office buildings,exhibition hall,school,hospital ...