Hero 25K sensor through a software update from G HUB, this upgrade is free to all players: Our most advanced, with 1:1 tracking, 400-plus ips, and 100 - 25,600 max dpi sensitivity plus zero smoothing, filtering, or acceleration 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 3.6 grams weights inside the mouse for personalized weight and balance tuning Programmable RGB Lighting and Lightsync technology: Customize lighting from nearly 16.8 million colors to match your team's colors, sport your own or sync colors 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 1 year hardware limited warranty. USB report rate: 1000Hz (1ms) Microprocessor: 32-bit ARM. Use Logitech G HUB to save your settings to the on board memory on the mouse and take them with you. Your saved settings will work on any PC without additional software or any login required.