Samsung Smart &amp; Super USB Mouse SMH-210UB 2 Button 1Wheel Button 800 DPI Optical sensor type<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"> Optical sensor type </span></li><li><span class="a-list-item"> 800DPI (it is possible to precise pointing work ) </span></li><li><span class="a-list-item"> 2Button ， 1Wheel Button (It gives a clear sense and gentle clack.) </span></li><li><span class="a-list-item"> interfaces- USB </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51E9-JAwdDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/512uEqq6KjL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41l14usRNJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/515%2BFjefC5L.jpg" noproxy>