YN600EX-RT Yongnuo Canon TTL Speedlight Flash
YN-600EX-RT is exactly the same function as Canon's best flash 600EX-RT, same functions, same power, even with the same appearance, TTL, HSS, Master. Function Supports RT System - YN600EX-RT can be used as an on-camera master unit and remote slave unit of Canon’s RT system and supports Gr grouping mode. Fully Compatible with YONGNUO YN-E3-RT, Canon’s 600EX-RT/ST-E3-RT Wireless Signal - One YN600EX-RT can be used as a master unit to trigger YONGNUO YN600EX-RT, Canon’s 600EX-