Yongnuo YN600EX-RT II Flash Speedlite for YN-E3-RT， Canon's 600EX-RT/ST-E3-RT Wireless Signal Camera， LCD Display， USB Firmware Upgrade， 1/8000sec Sync Speed with Color Gel Filters &amp; Diffuser<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"> Compatible with Canon E-TTL / E-TTL </span></li><li><span class="a-list-item"> The YN600EX-RT II can be used as on-camera master unit and remote slave unit of Canon's RT system，and supports Gr grouping mode. </span></li><li><span class="a-list-item"> GN60@ISO100，200mm;supports high-speed sync TTL， manual flash， Gr grouping flash， the highest synchronous speed can reach 1/8000s </span></li><li><span class="a-list-item"> The YN600EX-RT II supports YONGNUO， Canon's and Nikon's wireless optical master signal， supports S1 and S2 pre flash cancel mode. </span></li><li><span class="a-list-item"> The YN600EX-RT II supports auto and manual zooming， the flash coverage can be changed between AUTO， 20~200mm. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41TJzDm6ouL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31EETVQosdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31f-VTXLKJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31VLqNeRNHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/415oIfMRCXL.jpg" noproxy>