Wireless 16 Channels Flash Trigger Hot Shoe Adapter with Receiver for Sony NEX3 NEX5N Compatible with Canon SpeedLite 580EX II , 580EX, 550EX, 540EZ etc. 16 Channels with hot shoe adapter for external flashes. With sync output on the right side and hotshoe on the top, can add flash light on it(Do not support TTL function). Energy-saving design with 12V 23A battery of transmitter and 2 AAA batteries(not included) of receiver. Note: the camera will not give the hint that the flashlight is installed when this product is plugged, but that will make no influence on its use. Suitable for: Sony NEX E mount camera(Sony NEX 3 5 5N 5C 5R, etc.)