After 10 years of working with 600w Falcon Eyes strobe lights, it was finally time to upgrade to a professional brand. Very excited to try out the Profoto D1 500 Air TTL strobes. It makes studio quality lighting as easy to use as your camera’s TTL flash. The D1 offers double wireless freedom – a built in AirTTL receiver for remote triggering as well as a powerful on-board Lithium-ion battery that untethers you from the wall outlet.