100% Brand new and high quality.
Five button， full function mouse.
Special designed finger slot.
Two options for left-hander and right-hander.
2.4 GHz wireless connectivity.
Vertical ergonomic design perfectly fits the natural contour of the wrist and the palm.
Comfortable hand-holding posture of this product increases the control frequency of your mice， removes occupational carpal tunnel syndrome.
Professionally designed for office staff and gamers. The right， left and roller keys are uniquely deigned on the side， which will make your hand under the most relaxing state during using. Thus， it reduces the fatigue of the hand.
Specifications:
Interface: USB
Resolution: 1000dpi
Button: 4 buttons in default / 1 scroll wheel (middle button)
Battery: built-in rechargeable 400mA lithium battery
Rating: 5V 10mA
Dimension: 102(W) X 67(D) X 78mm(H)
Tracking Method: Optical
Color: Black， Grey， Blue， Purple
Net weight: 130g
Packing Includes:
1 x 2.4G Wireless Optical Vertical Mouse
1 x USB cable