Free Express Shipping! Profoto D2 500Ws AirTTL Monolight 500Ws Monolight, 300W Modeling Lamp, Built-In AirTTL Radio Receiver, 0.03-0.6 sec Recycling, 1/63,000 sec Freeze Mode Flash Duration, Quick Burst: Up to 20 Frames per Second, 10-Stop Power Range:...