YONGNUO YN600EX-RT II Professional Creative TTL Master Flash Sizepeedlite 2.4G Wireless 1/8000s HSizeSize GN60 Sizeupport Auto/ Manual Zooming for Canon Camera as 600EX-RT YN6000 EX RT II

--Realize wireless optical and radio flash control function In optical transmission and wireless radio transmission flash , the YN600EX-RT II can used as master unit to control the flash mode, exposure compensation, flash ratio, number of stroboscopic and stroboscopic frequency. --Compatible for Canon wireless radio RT system In wireless radio transmission flash , cooperate with the YN600EX-RT (II)、Can0n 600EX II-RT/ 430EXIII, one YN600EX-RT II can used as set-top master