Yongnuo RF-603C3-USA 2.4-GHz Wireless Flash Trigger/Shutter Release for Canon Pro DSLRs (Black)<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"> Remote wireless manual flash trigger and synchronized shutter release in one convenient unit， with included sync cord for Canon Pro DSLRs </span></li><li><span class="a-list-item"> 2.4-GHz RF gives you flexible control at distances much greater than optical triggering </span></li><li><span class="a-list-item"> Kit includes 2 transceivers and requires 4 total AAA batteries (not included) </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51rEcyXm%2BwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41TtYxbE2gL.jpg" noproxy>