<b>Say goodbye to wrist pain</b> <br /> The Scroll Endurance by J-Tech Digital is perfect for anyone who experiences wrist or hand fatigue when using a regular mouse. Its vertical design reduces the torsion of the forearm and wrist caused when using most other mice. The Scroll Endurance also includes a detachable palm rest to reduce drag on the desk surface. <br /> <br /> <b>Other cool features</b> <br /> In addition to its comfortable, ergonomic design, the Scroll Endurance also has adjustable sensitivity, which can be changed on-the-fly using the DPI button on the mouse. Another neat feature is the two thumb buttons, which perform back/forward browser navigation functions. <br /> <br /> <b>Specifications</b> <br /> Sensitivity modes: 600/1000/1600DPI <br /> Weight: 120g <br /> Rating: 5V/20mA <br /> Interface: USB 2.0/3.0 <br /> Dimensions: 136 x 100 x 87mm <br /> Compatible with: Windows XP/Vista/7/8, Mac OSX <br /> <br /> <b>Package includes<br /> </b>1x J-Tech Digital Scroll Endurance Wired Ergonomic Vertical Mouse <br /> 1x Removable Palm Rest <br /> <p><b>This product is compatible with Apple Mac system but back/forward buttons will not work. </b></p>