Neewer Timer Remote for Canon 50D, 40D, 30D, 20D, 10D, 5D,1Ds Mark III, 1D Mark III, 1D Mark II N, 1Ds Mark II,1D, 1V, EOS 3, D2000 Full functions supported as the camera shutter switch (with halfway or complete pressing). Functions as a timer remote and can be programmed to function as an interval met Design for group, macro, long exposures, continuous, motion shooting, etc. Energy saving design, can be use for long time Timer delay: 0s to 99hrs 59min 59s in 1s increments. Exposure time: 0s to 99hrs 59min 59s in 1s increments Interval: 0s to 99hrs 59min 59s in 1s increments This digital timer remote is designed to trigger a camera shutter with regular time intervals, featuring self-timer, interval timer, long-exposure timer, and exposure-count settings.The timer can be set anywhere from 1 second to 99 hours, 59 minutes, 59 seconds.