GTMax Wireless Remote Shutter Release MC-DC2 for Nikon Digital SLR Camera D7000 D90 D5000 D3100 D5100 Brand New non-OEM Remote Wireless Shutter release for Canon SLR Easy to operate, simple design. 16 Channels with Working Distance of 100 Meters Energy Saving Design, Long Working Hour. Camera must be set to "remote control" mode before operating the remote. Two-Level Shut