Polaroid Wireless Remote Controlled Shutter Release Switch (Equivalent MC-DC2) For The Nikon D7000, D5000, D3100, D90 Digital SLR Cameras Recommended For Preventing Camera Shake During Close-Up (macro) Photography Range Up To 100m (320ft.) Without Obstacles - Retractable Antenna For Long Range Shots! Designed For Groups, Macros, Time Lapse Mode, Long Exposures / Shutter Mode, Continuous Shooting Mode, Delay Shooting Mode etc. Low Power Consumption Minimizes The Need For Battery Replacement 16 Control Output Channels