More from Amazon.com : http://www.amazon.com/gp/product/B002X7FSO6?tag=purrfectcatdi-20
Cowboy Studio Wireless Remote Trigger Switch For Canon EOS and GD-C3R
One 1 Remote Shutter Receiver One 1 Remote Shutter Transmitter
One 1 User Manual One 1 Alkaline Battery 23A 12V Original Manufacture Package
Over 150 feet Range does not require line-of-sight release
16 channel For for anti-interference and consistent operation
Two position switch - Touch lightly to prefocus - Continue pressing to release shutter