This Speedotron 2403CX 2 CC Flash Head 2400W/s Air Travel System is built around the 2403CX LV Power Supply which offers true power output ratio control and variable dial-down power control with 6 head outlets. The combination provides an impressive 530 power options from its 2,400W/s payload and an equally impressive recycling time of only 2.0 seconds to full power. Engineered for reliability and safety on location shoots or in the studio, the electronics are housed in a dust-proof, compact, sealed case.