Opteka Remote Release Cord for Sony Alpha A900, A700, A350, A300, A200, A100 Digital SLR Cameras Opteka Remote Release Cord for Sony Alpha A900, A700, A350, A300, A200, & A100 Digital SLR Cameras Allows the camera to be released from a distance of up to 36 inches Half-press focuses, full press releases the shutter All Electronic - no batteries needed! Brand New, Sealed!