Osram 64668 XIR Medical & Microscopy lamps, made in Germany. Product features and benefits : Precise filament alignment with patented quartz pinch technology OSRAM HLX lamps provide 10% higher luminous efficacy over standard halogen Instant on and nearly constant luminous flux over the life of the lamp Dimmable Areas of application : Microscopy Laboratory & Analysis UV Curing Fiber Illumination Surgical & Dental Overhead Club & Disco Features : • Xenon instead of krypton as the filler gas (XENOPHOT HLX versions) • Luminous flux up to 10% higher with same power consumption (XENOPHOT HLX versions) • HLX tungsten halogen low-voltage lamp with or without reflector • Dimmable (HLX) • XIR tungsten halogen capsule with xenon gas filling Nominal wattage 80 W Nominal voltage 22.8 V Color temperature 3250K Nominal luminous flux 3050 lm Luminous flux 3050 lm Diameter 14 mm Length 44 mm Light center length (LCL) 30 mm Filament length 2.20 mm Illuminated field 2.2 × 5.5 mm² Filament diameter 5.5 mm Lifespan 400 h Base (standard designation) G6.35 Burning position h90 EEI - Energy Label B