<p><strong>Say goodbye to wrist pain</strong></p> <p>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.</p> <p><strong>Cool features</strong></p> <p>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. </p> <p><strong>NOTE:</strong></p> <p>Due to the innovative design of this ergonomic mouse, you may initially find it difficult to use. Please continue use over several days to grow accustomed to and enjoy the full comfort of the design. If you have any question or problem, please contact with us, we will try our best to help you.</p> <p><strong>Specifications</strong></p> <ul> <li>Material: ABS</li> <li>Working Voltage: 5 V</li> <li>Working Current: 165 mA</li> <li>DPI: 600 / 1000 (default) / 1600</li> <li>Response Rate: 125 Hz</li> <li>Size: L*W*H 148 * 95 * 99 mm</li> <li>Wire Length: 1.6 M</li> <li>Weight: 310g</li> <li>Compatibility: Windows 7 / 8 / 10 / Vista / XP / 2000, Linux, Mac OS X</li> </ul> <p><strong>Package includes<br /></strong></p> <ul> <li>1 X Wired Vertical Mouse</li> <li>1 X User Manual</li> </ul>