Calumet Genesis GF200 Portable Flash System The GF200 Portable Flash System provides 360 degree illumination and boasts 200ws power output with 60m Guide Number and is capable of wireless-remote manual power control when used with the Genesis Wireless Trigger kit (sold separately). The GF200 gives you excellent manual control of flash settings without sacrificing compactness or ease of use. I It features intuitive controls, rotating head with 90 degree tilt capability, and removable reflector. Recycling time to full power is two seconds and the flash duration time is 1/300-1/10000 seconds.