- This Lenovo mouse connects quickly and easily to your computer using Bluetooth, with no dongle needed- With super-quiet clicks you can minimise distractions and stay focused- Switch between 1000 and 4000 dpi sensitivity- Connect to up to 3 devices at the same time - use the button at the bottom of the mouse to switch between them quickly- With a 36-month battery life you'll spend less time worrying about changing batteries and more time getting stuff done