Nikon WR R11a WR T10 Remote Controller Set gopole plus hundreds of apps available plus hundreds of apps available on Google Play and Apple App Store made for mobile Cardboard VR devices unobtrusive design The WR R11a WR T10 Remote Controller Set includes a WR R11a Wireless Remote Controller and WR T10 Wireless Remote Controller (transmitter) that use radio frequencies to wirelessly control the shutter release on Nikon cameras or radio controlled flash units such as the SB 5000 Speedlight Photographers can use the WR T10 to simultaneously release the shutter on multiple cameras that have a WR R11a b or WR R10 unit attached and have been paired with the WR T10