High-performance HERO 16K Sensor: Logitech's most accurate sensor yet with up to 16,000 dpi for the ultimate in gaming speed, accuracy and responsiveness across entire DPI range 11 Customizable Buttons and Onboard Memory: Assign custom commands to the buttons and save up to five ready-to-play profiles directly to the mouse Adjustable Weight System: Arrange up to five removable 3.6g weights inside the mouse for personalized weight and balance tuning Programmable RGB Lighting and LIGHTSYNC Technology: Customize lighting from nearly 16.8 million colours to match your team's colours, sport your own or sync colours with other Logitech G gear Mechanical Switch Button Tensioning: Metal spring tensioning system and pivot hinges are built into left and right gaming mouse buttons for a crisp, clean click feel with rapid click feedback