Philips 23368-4 - 100 Watt - ED17 - MasterColor - Pulse Start - Metal Halide - Protected Arc Tube - 3000K - Medium Base - ANSI M140/M90/O - Universal Burn - MHC100/U/MP/3K ALTO Color/Finish: Clear Color Temperature: 3,000K Average Lifetime: 16000 hours Lumens (light output): 8600 CRI: 85