HERO Gaming Sensor: Next generation HERO mouse sensor delivers precision tracking up to 25600 DPI with zero smoothing, filtering or acceleration 11 programmable buttons and dual mode hyper-fast scroll wheel: The Logitech wired gaming mouse gives you fully customisable control over your gameplay Adjustable weights: Match your playing style. Arrange up to five 3.6 g weights for a personalised weight and balance configuration LIGHTSYNC technology: Logitech G LIGHTSYNC technology provides fully customisable RGB lighting that can also synchronise with your gaming (requires Logitech Gaming Software) Mechanical Switch Button Tensioning: A metal spring tensioning system and metal pivot hinges are built into left and right computer gaming mouse buttons for a crisp, clean click feel with rapid click feedback Next gen sensor : Capable of detecting movements at the sub-micron level, can track movement less than one millionth of a meter with pinpoint accuracy Mouse Built-in memory Yes Polling rate