Arion Rapoo 7100P 5.8GHz Wireless Optical Mouse With 4D Scroll Wheel Programmable Buttons - Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Innovative reliable 5G wireless technology provides powerful connection， preventing finterference from other Bluetooth and Wi-Fi devices </span></li><li><span class="a-list-item"> Rapoo's latest energy saving technology and power switch， battery life up to 18 MONTHS. Can support with a single battery </span></li><li><span class="a-list-item"> 4D Scroll wheel make scroll up/down， scroll side to side and as a button too </span></li><li><span class="a-list-item"> Adjustable 500/1000 DPI high-definition tracking engine. Portable， Nano-receiver build-in design </span></li><li><span class="a-list-item"> Advanced programmable buttons allow to define shortcut to Applications， Office file and Web pages </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41%2BxDIrW-5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/411Q1ErCr0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31wXzSqyczL.jpg" noproxy>