found at DigiDirect
Powered by an Extreme Li-Ion Battery the Hahnel Modus 600RT MKII Speedlight Wireless Kit for Fujioffers extremely fast recycling speed of 1.5sec. Around four times faster than on AA battery power. The built in 2.4GHz wireless system makes it easy to venture into creative off-camera flash photography.
The flash has high performance too at Guide Number 60 at ISO 100 (200mm setting) ensuring enough power in most situations. The firmware can be upgraded through an integrated USB port and the flash offers TTL, Manual and Multi Modes.