4 adjustable speed levels for optimal precision Double USB-A and USB-C connectivity, providing wide compatibility Its silent click helps create a more peaceful working environment Its ergonomic, ambidextrous and lightweight design provides optimal comfort during use A 1.6 m long cable offering a great freedom of movement Plug and play installation allows you to be operational as soon as you plug it in 3 buttons and a scroll wheel, perfect for an everyday use Compatible with Windows, Mac OS, Chrome OS and Android