Metal Halide Lamp G12 Base :color index Ra=78. color temperature 3200K,4000K, 6000K . 70-150W G12 Base. Metal Halide Lamp G12 Base:Characteristics : High luminous efficiency, long service life, good photochromism, Application : Available for the stadium, exhibition center, supermarket, pleasure ground and street lighting.You can also visit our website for more information. Thank you.