"Features: 100% brand new and high quality A genuine Ergonomic mouse with vertical design, adding more comfort to the wrist. Arched mouse back with arc ring design, can perfectly fit the natural state of the palm. Professionally designed for office staff and gamers. The right, left and roller key are uniquely deigned on the side, which can place the hand under the most relaxed state during using thus reduce the fatigue of the hand. The right side of the mouse is equipped with the function of forward or back to turn pages, which makes your work more convenient and flexible.Connection method: USB wired Connection port: USB 2.0 Compatible with:Win98/2000/XP/VISTA/7/10/MAC Diension:Approx.101*76*82mm Package includes: 1 x Mice ""all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.""