With a built-in radio receiver, the YN685 II C Wireless TTL Speedlite for Canon Cameras from Yongnuo offers complete radio slave functionality with the transmitters such as the YN-622C, RF-603, YN-560 radio systems for maximum compatibility with your existing gear. The flash is also compatible with Canon's E-TTL and E-TTL II flash system when mounted on the camera and has a powerful guide number of 197' at ISO 100 and 200mm. Benefiting this power is a wide zoom range which will cover 20-200mm in full frame, and a diffuser for wide angle lenses. It also features full bounce with tilt up to 90° and rotation of 180° to the left or right.
Operation is simplified with a clear LCD screen on the back, a dial, and a selection of buttons. The head also offers a pull-out bounce panel for reflecting some light forward when using the tilt functionality. Full sync options are available as well, with high-speed, and 1st and 2nd curtain sync. It runs conveniently on 4 AA batteries, has a recycle time of three seconds at full power, and includes a power port for battery packs.