Logitech 931375 G7 cordless laser gaming mouse , 2.4 GHz , 2 x fast-swap ultra-light Li-ion packs with charge station , adjustable 2000/800/400 dpi laser engine , PTFE ( Polytetrafluoroethylene ) gaming feet , 6.4mp/sec , Max. Acceleration: 20g , speed 1.65m/sec , 6 buttons , Illuminated 4-level battery indicator , with recharge station , with Tilt wheel , dedicated controls to switch “on-the-fly” from pixel-precise targeting to fast-twitch evasive moves - usb