Philips MSR1200 750hr - lamp with G22 socket. Extremely high light output (three to four times higher in comparison to filament lights), excellent colour rendering. Light is generated via an arc between two electrodes. Spectrum similar to daylight (between 4500 and 6500K). Constant colour temperature and colour rendering behaviour over the whole lamp life. Halogen metal evaporation lamps provide a spectrum composed of a lot of lines, in contrast to temperature radiators, as halogen-incandescent lamps.