• With 1 / 4 screw, can be used in locking handle stabilizer tripod device
• No battery required, controlled by camera power
• Can control one camera, or control two cameras at the same time
• The use of electronic buttons, feel the level of clear
• Function is equivalent to the shutter button on the camera body
• The shutter release jack of the camera is 3.5mm, which is relatively tight and needs to be pushed in with the force of the rotation hand to press in the end to communicate