YONGNUO YN690EX-RT On-camera Flash Light Master Slave Speedlite

Features:Built-in 2.4G Wireless Trigger SystemCan work as a master or a slave unit, and fully compatible with RF radio triggering signals from other YONGNUO' speedlite.Powerful and Versatile With a Guide Number of 60 at ISO100 and 200mm, this on-camera flash light supports TTL, M, MULTI, and Gr flash modes. It offers a high-speed sync of up to 1/8000s, USB firmware upgradeability, real-time battery level display, motorized zoom, auto-save function, customizable settings (C.Fn), and a large LCD screen. The built-in battery protection circuit and ultra-fast charging recycle system ensure reliable performance.Compatibility with Canon Wireless RT System When used in wireless flash shooting, one YN690EX-RT can serve as the master control to trigger both Yongnuo RT flash lights and Canon RT flash lights. It allows remote control of flash modes and intensity for slave units. Additionally, the YN690EX-RT can receive wireless signals from Yongnuo RT and Canon RT flash lights, enabling remote TTL/M/MULTI/Gr flash.Optical Wireless Master ControlIn optical wireless shooting, the YN690EX-RT can act as the master control to trigger Yongnuo EX flash lights (except YN585EX) and Canon EX series flash lights wirelessly in TTL/M/MULTI modes, expanding your wireless flash capabilities.Optical Wireless Slave FunctionThe YN690EX-RT supports receiving wireless signals from Canon or Nikon flash lights as the main signal, supporting S1 and S2 flash modes, allowing you to integrate it seamlessly into your existing flash setup.Long-lasting Lithium-ion Battery Equipped with a 2000mAh lithium-ion battery and Type-C quick charging design, the YN690EX-RT speedlite offers convenient and efficient charging. With a full charge, it can fire at least 600 times, ensuring you never miss a shot.