The Flashpoint R2 ProII F wireless flash trigger is the definitive dedicated transmitter for the R2 Family of Flash - The ultimate command center for Fujifilm cameras to control Flashpoint R2 wireless system devices. Manage flash like never before. The ProII F presents expanded precision derived from the fabulous FP R2 Pro version. The R2 trigger links to the Sekonic L-858 Light Meter through the optional RT-GX radio to the R2 ProII F. Instinctive Group buttons have direct access at the left of the display panel. Built-in Bluetooth links to the graphical FP Smartphone APP for remote operation with 328 foot/100-meter reach. Plus, the newly fine-tuned smartphone APP endows the savvy Apple or Android mobile photographer with pure shooting pleasure, taking R2 technology a giant step further.Custom designed and created Surety</B>The list of novelty goes on. Along with long-awaited single-pin non-automated triggering is multiple dual-purpose custom button assignments. The R2 trigger also links to the Sekonic L-858 Light Meter through the optional RT-GX radio module. The respected Sekonic displays and acts as a command center for the R2 Family of Flash through the R2 ProII. Meters are the most reliable way to prep for a shoot. Ratios, contrast and color are best controlled formally through a flash meter. We can do it with a LCD display an the back of our cameras, but meter are for sure. The Flashpoint R2 ProII is one of the R2 devices that will never stand vanquished