Logitech Gaming Miš G309 Lightspeed Wireless Black Sensor: HERO 25K, Resolution: 100 – 25,600 DPI, Max. acceleration: >40 G 1Tested on Logitech G240 Gaming Mouse Pad, Max. speed: >400 IPS 2Tested on Logitech G240 Gaming Mouse Pad, Zero smoothing/acceleration/filtering, LIGHTFORCE SWITCHES hybrid optical-mechanical switches, LIGHTSPEED wireless technology, Up to 5 onboard memory profiles, PTFE Feet, Battery life - Battery life may vary based on user and computing conditions, Constant motion 300+ hrs with LIGHTSPEED Wireless, 600+ with Bluetooth