Tired of using the traditional grip mouse? Take a break from our Ergonomic Vertical Mouse. The ergonomically-designed thumb rests fit well for your palm for maximum comfort. Six buttons offer you more convenient operation, increasing your work efficiency. Easily switch to 800, 1200 or 1600 DPI by simply pressing the top button. With 2.4GHz wireless technology up to 32.8ft connection distance, no lag, no messy wire, just plug and play!Ergonomic Vertical Design - Scientifically designed with ergon