uxcell Camera Wireless Optical Slave Flash Remote Trigger SYK-3 Sensor Product Name : SYK-3 Flash Remote Controller;Material : Plastic, Metal Color : Black;Fit for : All Flashgun Dimension : 3.7 x 3.6 x 2.5cm / 1.46" x 1.42" x 0.98" (L*W*H) Net Weight : 18g Package : 1 x SYK-3 Flash Remote Controller