Neewer Compact Lightweight Portable External Battery Pack Replacement for Nikon Speedlite Flash SB910 SB900 SB800 and Neewer 561，562，660III，NW910/MK910，NW580，NW670/VK750 II，NW690<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"> Designed to boost the recycling speed for your flash in a much more effective and economic way. </span></li><li><span class="a-list-item"> Red light indicator for working status. </span></li><li><span class="a-list-item"> Smart 1/4" screw knob design for mouting the battery pack beneath your DSLR camera.Do not force the screw knob through the hole.You need to spin the screw in for the hole to hold it. </span></li><li><span class="a-list-item"> No complex operation needed. Easy to use. </span></li><li><span class="a-list-item"> Suitable for Nikon Flash SB-II，SB20，SB24，SB25，SB26，SB27，SB28/28DX，SB800 SB910 SB900 Neewer 561，562，660III，NW910/MK910，MK900，NW580，NW670/VK750 II，NW690/MK950II </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Kny23VK9L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41TA3cRNsJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/5198%2BTAJHXL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51I2xsH8YoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41lDCCo%2BGjL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51DcpNyc3cL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/514YxZayy3L.jpg" noproxy>