Cooler Master Cooler Master Sentinel III Ergonomic Palm Grip Mouse Designed for FPS Gaming (SGM-6020-KLOW1) Comfortable palm grip design - ergonomic, large mouse body design and stylish matte finish is a perfect fit for gamers using palm grip Macro and profile support - 8 programmable buttons, 5 profiles and new, user friendly software makes creating macros and profiles easier than ever OLED Display - Easily change on-the-fly DPI settings, lift off distance, and calibrate your mouse without software Advanced Avago 3988 sensor - Zero hardware acceleration offers precise movements and ensures your target stays in your crosshair Onboard 512 KB memory - Retain settings for macros, scripts, and other customizations for use on another system without the need of additional software Create key combinations - Storm TactiX technology lets you program any button with a secondary function, keeping you one step ahead of the competition Customizable OLED display logo - represent your guild, clan, or team by uploading custom avatar or logo Weight adjustment system - 4.5 gram metal weights, giving you the ideal mouse weight with a 22.5 gram weight variation