C3 Wireless Remote Focus + Shutter Release Trigger for Canon EOS 1D/1Ds/1D Mark II + More
Receiver powered by 1 x 12V 23A battery (included) - Transmitter powered by 1 x CR2 battery (included) - Designed for the following Cameras: Canon EOS 1D 1Ds 1D Mark II 1Ds MARK II 1Ds Mark III 1D Mark III N 1D Mark III 1Ds Mark III 5D 10D 20D 30D 40D D30 D60 D2000