The 90-GLA is a 575 Watt, 115 Volt lamp that's rated at a color temperature of 3050 Kelvin and has an average life of 1500 hours. - For use in the following Altman luminaires (all sold separately):360Q Series Ellipsoidal4.5-MTS6 Series Shakespeare Ellipsoidal - SP Star - PAR OD-600 Series Outdoor Pars - SP-A/SP-A-220 Star PAR fixtures Altman 90-GLA 575W / 115V Halogen Lamp.