YONGNUO Camera Flash,Firmware DSizeLR Camera Sizeync USizeB Firmware Sizepeed Sizeync Master Sizelave III Wireless TTL II II Master Sizeync USize Warranty E-TTL Sizepeedlite Master Cameras Sizepeedlite Master Wireless

Supports C's optical transportation wireless master flash; Compatible with C and N's optical transportation wireless slave flash. Supports firmware upgrade: --The YN568EX III is equipped with USB interface, you can download the latest firmware from official website to upgrade the speedlite. Equipped with large-size LCD display and 2.5mm PC interface, and supports the battery remaining power real-time display, convenient to use. Multiple trigger modes, automatic settings saving and custom setting supported. Compatible with C and N's optical transportation wireless slave flash: --One YN568EX III can respectively accept the master unit of YN600EX-RT II, YN568EX II, YN568EX III, 600EX(II)-RT, 580EX II, SB-910/900/800/700, Nikon internal flash and Canon commander and wireless signal of 7D/60D/600D, realiszs external TTL, manual flash and stroboscopic flash. Compatible with C and N's optical transportation wireless slave flash.