HM-ANT GD-C1R 16 Channels Wireless Remote Shutter for Cannon, Contax, Pentax and Samsung 1.Two-color LED indication;The remote shutter release can delay shooting. 2.The wireless shutter release has 16-unique-channel to supports multiple user's environment. 3.Remote distance up to 30 meters in the open space.This camera remote control can avoid camera vibration and sharper pictures. 4.With auto-focus, B doors, single and continuous shutter function (to be right camera settings accordingly).