The Olympus FL-700WR Electronic Flash is a compact on-camera strobe with wireless connectivity. It is compatible with the OM-D E-M1 Mark II and E-M1X cameras. The flash comes with a guide number of 42 with coverage of 12–75mm. You can use the flash as a commander as well as slave and can switch between different modes. The wireless radio system allows you to trigger other strobes within 98 feet. When acting as a commander, the FL-700WR automatically identifies available channels. You can bounce the flash 90° vertically and 180° horizontally. The flash can be synchronized with the camera shutter to enable triggering at 10 fps. Turn on the LED light to shoot videos in the dark. The flash has a dustproof, splashproof, and freezeproof body that allows you to use it in inclement weather.