YONGNUO Camera Flash;Firmware DSLR Camera Sync USB Firmware Speed Sync Master Slave III Wireless TTL II II Master Sync US Warranty E-TTL Speedlite Master Cameras Speedlite 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.