9 Programmable Buttons: Speed up game commands by programming them on your gaming mouse buttons to allow you to play with even more determination Built-in memory: Store up to three games or gamer profiles in the Logitech G mouse, transferable memory from computer to computer and customizable gamer profile Simple Configuration Software: Customize mouse commands. Auto Detect feature you'll always have access to custom game configurations Symmetrical and anatomical shape: ensures an equally comfortable grip with ?both hands. The G300s is also ideal for those who don't want a large ?sized mouse Game-friendly optical sensor: accurately track slow or rapid movements on numerous ?surfaces. This ensures a uniform response to hand movements Ambidextrous design: Versatile design in a compact shape, this mouse is designed for comfort and durability. Balanced shape works for both right and left handed users