2.4 ghz transceiver with 328' range
guide number: 190' at iso 100 and 105mm
zoom range: 24-105mm (18mm with panel)
output range: 1/1 to 1/128
tilts -7 to 90° & rotates 270°
optical slave functionality
recycle time: three seconds
multi-mode for firing series of flashes
pc sync and hv power ports
runs on four aa batteries