Good in photochromism, concentrate light beam, convenient use, 2,000-hours average life-time. Features: 1) Good in ... photochromism, concentrate light beam, convenient use, 2,000-hours average life-time. 2) Applications: illumination for ... house, shopwindow, display hall, commodity exhibition room and billboard. Code Type Voltage(v)Wattahe(w) Base Bulb Max Length(mm ...