... Bulb Design. RA=65,Long Life.Professional HID manufacturer, full range of metal halide bulb 50,70,100,150,175,250,400 ... Metal Halide lamps (QUARTZ)(ALL LAMPS UV STOP)(CERAMIC also available) TypeWattageColorTemperature(K)LampVoltage (V)LampCurrent(A)LuminousFlux (LM)AverageLife ( ... .3800006000E40BTClear65MH-BT2000W/CL/4K200042002309.3240005000E40BTClear65 Metal halide lamp-American standard/ T SHAPE/