Eiko 6777 - 35 Watt - T6 - ColorMaster Pro - Metal Halide - Unprotected Arc Tube - 3000K - G12 Base - ANSI M130/E - CMP35/T6/942 Color/Finish: Clear Color Temperature: 4,200K Average Lifetime: 12000 hours Lumens (light output): 3700 CRI: 90