Technical Information Tungsten Halogen single ended No. DO 5371 Edition: 05/06 - subject to change 64721 (230V) Supersedes: / Status: valid Product description The OSRAM 64721 is mainly used for studio and film production and often fitted into Fresnel luminaires. Technical Data Lamp / order reference 64721 ANSI FKH LIF CP/39 Rated lamp wattage W 650 Rated lamp voltage V 230 Average life-time h 100 Color temperature K 3200 Luminous flux lm 16800 Luminous efficacy lm/W 25.85 Base G22 Diameter d mm 26 max. Lamp length L mm 140 max. LCL a mm 63.5 + 2 Filament dimensions (w x h) mm 13 x 17 Type of filament biplan Lamp operation Max. pinch seal temperature °C 400°C max. Burning position s90 Fuse protection 4A quick Display/Optic Berlin