The Profoto D2 1000Ws AirTTL Monolight is an AC powered strobe light that uses a 300W modeling lamp. It has an impressive fast flash duration of 1/50000 and fast recycling to full power in 1.2 seconds. It has a power range of 10 stops and a high speed sync up to 1/8000 of a second that makes it the ideal light to shoot fast moving subjects. If you need a strong battery powered monolight you might want to use the Profoto B1x.