Ceramic arc tube to ensure reliability colour uniformity and stability throughout lamp life Unique one piece elliptical arc tube for highest efficacy combined with excellent colour rendition Very compact lamp design allowing for compact fixture developments Easy to install and robust GX10 or GU6.5 twist and lock lamp base Crisp warm white light allowing significant energy saving versus low voltage halogen Superia CMI 20W Low Voltage Halogen 50W Operation on electronic control gear for 20W metal halide