The GF400 gives you excellent manual control of flash settings with compact form and ease of use. It features intuitive controls, a rotating head with 90° tilt capability, and removable reflector. This system has 7-stops of variable output from 1/128th to 1/1 power in 1/3-stop increments. Recycling time to full power is 4 seconds and the flash duration time is 1/300-1/10000 seconds. The GF400 features 5 different flash modes (Manual, S1 & S2 Slave Triggering, RPT Stroboscopic Flash, and Hi-speed Sync Triggering), and comes with an off-camera adapter base.