Evoluent Right Handed Wireless Vertical Mouse, VMOUS4WRLHY + Duracell NEW Optimum AAA Alkaline Batteries [Pack of 4], 1.5 V LR03 MX2400

[ Avoid Forearm Twisting ] The patented shape supports your hand in an upright neutral posture that generally avoids forearm twisting. Many users, including medical doctors, ergonomists and physical therapists, said the Evoluent VerticalMouse provides superior comfort and even relieved their wrist pain

[ Comfortable and Easy to Use ] The shape is thoughtfully sculpted for uncompromised comfort and easy-to-reach programmable buttons. No finger contortions are needed to operate the buttons. An extra wide lip along the bottom edge prevents the last finger from rubbing the desk

[ Adjustable Pointer Speed With Indicators ] A button behind the wheel enables quickly changing the pointer speed to suit different tasks: select higher speed (higher DPI) to make the pointer move faster for general use; select lower speed (lower DPI) to make the pointer move slower and more precisely for drawing, photo editing, etc. Up to four lights show pointer speeds from slow to fast

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Duracell Optimum AAA batteries provide UP TO 100% EXTRA LIFE* or EXTRA POWER** so that you get the best performance from devices.

EXTRA LIFE = Duracell Optimum will last longer in some devices like toys***