I haven't had a chance to approximate the lumens, it's gotta be around 180-200 out the front, but when it comes to throwers, it's not always about lumens, it's about the reflector design, etc. We've been metering it around 30,000LUX with fresh batteries, and Fastcar has it at 25,000LUX (this is the intensity of the hot spot, 1 meter from the front) after 2 hours of run time! Pretty impressive for an LED.
My Maglite 6D with fresh D's and a Xenon bulb was giving me a little over 30,000LUX at 1 meter, but the DBS seems to out throw it as it has a superior reflector, and the beam is tighter and less scattered.