Ultra-light gaming mouse: The M42 delivers a wireless performance at e-sports level. You connect it via USB dongle (2.4 GHz radio) and it has a polling rate of up to 1000 Hz (response time of 1 ms) First-class components: Pixart 3370 sensor for precision, Kailh GM 8.0 switch for 80 million crisp clicks and ARM 32-bit microcontroller for exceptional speed and stability Customizable: Mouse can be used ambidextrous thanks to its symmetrical shape. You can adjust the size by replacing the back shell, and the weight balance by moving the battery to the front or the back Rechargeable battery: Up to 75 hours of continuous gaming on one charge. And when it's time to charge, change to corded. Simply plug in the cable, and keep playing without interrupting your game No software required: with the touch of a button you can set illuminated effects and brightness as well as CPI, polling rate, lift-off distance and debounce time directly on the mouse