ClearMax Multi-Function Timer Remote Control Shutter for Canon EOS 5D, 7D, 1D, 1D Mark II, 1D Mark III, 1D Mark IV, 5D MARK II, 1Ds, 1Ds Mark II, 1Ds Mark III + Free Flexible Monopod Advanced camera shutter release tool which can be used to release camera shutter from a Distance, and Reduce Camera Shake Features an illumintaed LCD panel and an alert sound which can be turned on/off Self-timer, interval timer, long-exposure timer, and exposure count setting features Designed for group, macro, long exposures, continuous, motion shooting, etc. Energy saving design, Approximately two months of continuos shooting