DESC: The SB-600 supports Advanced Wireless Lighting as a remote Speedlight that can be positioned as one of multiple remote flashes to significantly extend creative possibilities. To assist in such situations, the Speedlight SB-600 also has two Ready Lights located on both the left and right of the front that can be easily seen from a distance. The SB-600 can also emit an audible alert for further assistance.the SB-600 supports Advanced Wireless Lighting as a remote Speedlight that can be positioned as one of multiple remote flashes to significantly extend creative possibilities. To assist in such situations, the Speedlight SB-600 also has two Ready Lights located on both the left and right of the front that can be easily seen from a distance. The SB-600 can also emit an audible alert for further assistance.