The Evoluent Vertical Mouse 3 is, like both generations before it, designed to keep you wrist more naturally in a “handshake” position. With 5 programmable buttons and scroll wheel, the optical tracking can be adjusted from 800 to 2600dpi. There is a Break Reminder to let you know you have been on your PC too long. Choose between the left or right-handed wired version for $80.00 or the right-handed wireless for $120.00.