The Flashpoint Zoom Li-on R2 TTL Flash for Olympus and Panasonic represents a significant breakthrough in speedlight power technology with the introduction of full R2 Remote TTL connectivity and camera interaction with all Olympus and Panasonic strobe functions. From standard TTL, to Exposure Compensation (FEC), FV Lock, High Speed Sync, and an automatically zooming flashhead, all the way to connectivity with other R2 flashes, group control, Slave and Master options, and advanced flash functions, the Zoom Li-on flash takes you as far as you want to go. The remarkable energy advantage is the internal and interchangeable Lithium Ion Polymer battery with exponentially more power than AA batteries of any type, while fitting into roughly the same amount of space. Packing an amazing 11.1 volts and 2000mAh, this battery can power your flash longer and with faster recycle than any shoe mount speedlight on the market. Full power recycle times are less than 1.5 seconds, even if you fire 5 full power shots in fast succession! One completely charged battery can deliver up to 650 of those full power shots. Even in TTL mode, you can try to drain the battery, but the Zoom Li-on keeps on going strong. The key component that makes this new flash stand apart from others is the proprietary TTL and HSS enabled 2.4GHz R2 Radio Remote System radio triggers transmits atop an Fujifilm body with the essential TTL pass-through, laser AF assist and works with the compl