Good in photochromism, concentrate light beam, convenient use, 2,000-hours average life-time. Features: 1) ... photochromism, concentrate light beam, convenient use, 2,000-hours average life-time. 2) Applications: illumination for house, shopwindow, display hall, ... E40 R135 211 790935 RF-H500W 220 500 E39/E40 R160 238 790936 RF-H1000W 220 1000 E39/E40 R180 315 Reflector Lamps for Outdoor Use(RF-H)