Nikon WR-R11a Remote Controller

Range (line of sight) from the WR-T10 to WR-R11a is 66 feet (20 meters)., Range (line of sight) from WR-R11a (acting as a master unit) to WR-R10 or WR-11a/b units is 164 feet (50 meters)., Up to 18 Speedlights can be paired to the WR-R11a on the camera., Communication distance between the WR-R11a on the camera and the Speedlight is approx. 98 ft. (30 meters)., Compatible With Z 7II & Z 6II Cameras. The WR-11a comes with a small strap that can be used to connect the unit to the camera strap for convenience.