The Profoto D1 Air 250 w/s Monolight is a significant refinement of the ComPact monolight series from the company which having become synonymous with professional strobe lighting, is now celebrating its 40th anniversary. A new built-in 77 degree reflector (5.12 diameter) maximizes case space and is ideal for umbrella and softbox use. Features that we've come to expect from Profoto over the years: short flash duration, rapid recycling, a bright 300W modeling lamp and heavy-duty cabling are all on-board. New Profoto Air System technology replaces the sync cord, allowing the head to be remotely triggered from as much as 300 meters (1000 feet) away using a Profoto Air Remote or Air Sync transceiver (sold separately). The Air Sync provides wireless triggering (8 channels) via hot shoe or mini plug, while the Air Remote provides wireless triggering as well as full-function head control over 8 channels in 6 distinct groups. Additionally, the D1 Air's syncing and complete functionality can be wirelessly controlled via your PC or Mac by using Profoto's Air USB and Studio Air systems.