The Flashpoint Zoom R2 Mini Flash with Integrated R2 Radio Transceiver for Nikon represents a significant new version breakthrough in speedlight power technology with the introduction of full R2 Remote connectivity and interaction with all strobe functions. This unique design balances the tradition of compact cameras, ease of use, with stunning light performance. From connectivity with other R2 family of flashes, group control, Slave and Master options, power levels to Exposure Compensation (FEC), FV Lock, High Speed Sync, and an automatically zooming flashhead, all the way to complete manual control and advanced flash functions, the Zoom Mini flash takes you as far as you want to go, with an appreciation of Sony mirrorless cameras. Recycle times are from approximately 0.1 - 2.2 seconds, and provide up to 210 full power pops per 2 AA alkaline battery set. Besides TTL and manual control, there are 2 optical slave modes, and a stroboscopic mode as well. Remote power control using a Flashpoint R2 System Transmitter or R2 Family flash allows you to view and change your flash output as you shoot as well as trigger the flash and adjust other functions from more than 200 feet away, for extreme off camera work. The Zoom Mini Flash has a USB port for firmware updates, available from the Flashpoint Firmware updates for Flashpoint R1 and R2 products, and are available here: Less Thana href="http://www.adorama.com/g/flashpoint_firmware_download" target="_blank"