Vello RS-N2 II Wired Remote Switch for Nikon DSLRs with DC-2 Connection - Nikon: Df, D90, D600, D610, D3100, D3200, D3300, D5000, D5100, D5200, D5300, D7000 and D7100; CoolPix P7800 Control Autofocus and Shutter Triggering | Capture Images without Camera Shake Ideal for Taking Long Exposures | Use for Continuous or Single Exposures No Battery Required-Powered by Camera | Larger, More Comfortable Form Factor 1-Year Limited Warranty