YONGNUO Wireless Shutter Release &amp; Flash Trigger RF-603II C3 for Canon DSLR 1D /1DS， EOS 5D Mark II/5D /7D/50D /40D /30D /20D /10D<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Higher sync speed than the first generation and Adding the Locking rings </span></li><li><span class="a-list-item"> Improved Flash / Shutter control Buttons </span></li><li><span class="a-list-item"> Working for more non Canon/Nikon cameras and single firing pin cameras </span></li><li><span class="a-list-item"> Adding the power switch for single transmitter </span></li><li><span class="a-list-item"> Suit for first generation， you can use them together </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41PaMDoC5sL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418AGEHtpzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41q2uY7VIdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41aNY2oI8IL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/419yqFWRgQL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KLLjRWeTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418uhN1rwfL.jpg" noproxy>