Technical Information Tungsten Halogen double ended No. DO 5373 Edition: 04/06 - subject to change 64781(230/240V) Supersedes: / Status: valid Product description The OSRAM 64781 is a double ended Tungsten halogen lamp with a RX7s socket. It is often used in open face luminaries for studio and film production. Technical Data Lamp / order reference 64781 ANSI FEX LIF P2/27 Rated lamp wattage W 2000 Rated lamp voltage V 230/240 Average life-time h 300 Color temperature K 3200 Luminous flux lm 50000 Base RX7s Diameter d mm 30 max. Lamp length L1 mm 138.1 Length of coil L2 mm 38 Type of coil CC-8 Lamp operation Max. pinch seal temperature Burning position Display/Optic Berlin °C 350 p15