"The new upgraded version of the YN622C II supports YN560-TX/RF605(603 mode)/RF603(II) series products, is equipped with a quick-lock design, and supports USB firmware upgrade. This flash is a high-performance master and slave, capable of multiple-flash photography. Through digital FSK 2.4GHz radio wireless transmission and different photographic effects can be had through setting your flash at any angle. The remote control has a range of 100 meters, and supports 7 wireless channels and A/B/C three groups.
Remotely change the modes and parameters of the flash quickly when using the Canon EOS series DSLR cameras, which supports external flash function, such as TTL ratio, or manually change the flash output. This unit supports high-speed sync; the max sync speed is 1/8000s. Supports E-TTL, Manual and Multi flash modes. Supports E-TTL flash installing on the top of the transmitter.|Quick lock design|Supports USB firmware upgrade|Supports ""622"" communication mode,""560-RX"" communication mode|Compatible flash mode: E-TTL (II)/ Manual/Multi|Compatible Shutter sync: 1st curtain, 2nd curtain, high speed sync (HSS/FP), Max 1/8000s sync speed|Control remote flash using camera's flash control menu screen (Remote Control Mode)|Support E-TTL/Manual/Multi flash mode mix using (Mix Control Mode)|Flash on hot-shoe of transmitter supports ETTL|Support Flash Exposure Compensation (FEC)|Support Flash Exposure Bracketing (FEB)|Support Flash Exposure Lock (FEL)|Support modeling Flash|Support E-TTL group ratio (ALL/ A:B/ A:B C)|Support Manual/Multi group (ALL/ A:B/ A:B:C)|Support flash zooming (auto, manual)|Support AF assist beam emitter(AF Lamp)|Support PC port triggering strobe flashes and support 1st, 2nd curtain/HSS (Super Sync)|Support LCD Live view triggering|Support high-speed continuous shooting trigger|Settings saved automatically|Compatible with ALL Yongnuo/Canon EXII series flashes|Support single-contact of camera and flash triggering (max sync speed is 1/250s)"