SFBAY Pro Remote Shutter Release Connection Cable Compatible with RS-80N3 Replacement for Canon EOS 7D / 5D / 5D Mark II / 1D / 1D Mark II / 1D Mark III/ 1Ds Mark II / 50D / 40D / 30D / 20D / 10D 100% Compatible with RS-80N3 Shutter Release. No batteries are required Great for studio, Night shooting, and Long time explosure Use for Continuous or Single Exposures User Manual Included