COMPATIBILITY: Canon EOS R3 / EOS R6 Mark II / EOS R8 / EOS R7 / EOS R10 / EOS R50 / EOS R1 / EOS R5 Mark II REMOTE FLASH MADE EASY: The OC-E4A connects to a multi-function shoe leaving you free to experiment with flash photography using off-camera flash for creative lighting with automatic exposure control. INTEGRATED POWER DELIVERY: The cable powers accessories direct from the camera, so external devices such as microphones can be used with no additional power source needed. WATER RESISTANT: The OC-E4A is dust and water resistant while a locking lever mechanism at the base of the unit enables the unit to be securely and safely connected to your camera. VR PHOTOGRAPHY: The perfect accessory when using the Canon RF 5.2mm F2.8L DUAL FISHEYE lens, the OC-E4A cable sits at an angle from the base unit, thus prevent it from appearing in the VR image. VERSATILE: Audio Support when using compatible external microphones.