COMFORT AND PRECISIONErgnomic design minimzes strain on the arm, wrist and handIntelligent power saving technology – Long battery lifeNo mouse pad requiredFeatures:6-button wireless optical mouse with USB Nano-receiverErgonomic vertical hand position prevents fatigue and minimizes wrist problemsCPI button for quick resolution changes (1200- 3200 DPI)Next/Previous buttons for faster Internet browsingSpecifications:Optical resolution: 1200, 1600, 3200 DPI selectable by the buttonPower consumption: 1.5 V DC, up to 15 mAMouse: dimensions 95 x 65 x 36 mm, net weight 98 g Cable length: 1.35mSystem requirements:Windows 7/8/10