Yongnuo RF-603 II RF603 II Wireless Flash Trigger/Remote N1<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"> Max Sync Speed: 1/320 second </span></li><li><span class="a-list-item"> Type: FSK 2.4GHz wireless remote control system </span></li><li><span class="a-list-item"> 100m transmission distance with 16 channels. </span></li><li><span class="a-list-item"> Shutter release: half-press， full-press </span></li><li><span class="a-list-item"> Takes 7 - 15 days to deliver. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/413pO6dWMrL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41w4NGp6HoL.jpg" noproxy>