5d wired optical gaming mouse with usb portable 1200dpi 2.4gh ergonomic upright vertical mouse for pc desklapcomputer

rm1 description: when the user is using the mouse, the palm is close to the deskand the vertical state. ordinary mouse in the course of the use of the user's arm is to move in the horizontal to control it, a long time to easily lead to fatigue of the arm, and even lead to serious parts of the arm joints, long-term use of ordinary mouse computer work may also be due to a small mouse and suffering from occupational diseases. we also call it ergonomic mouse . if you also use the mouse for...