Set up your wireless strobes with the Olympus FC-WR Wireless Radiowave Flash Commander for synchronized triggering up to 98 feet. It can be mounted on the top accessory shoe of your camera. You can use the flash commander with the Olympus OM-D E-M1X, E-M1 Mark II, E-M1, E-M5 Mark II, and PEN-F cameras as well as an FR-WR flash receiver. The flash commander supports up to 3 groups and allows you to trigger up to any number of strobes. You can access the group setting even while monitoring the scene from the camera screen. The weather-sealed body lets the flash commander work in extremely cold temperatures down to 14°F