The Lenovo Professional Bluetooth Rechargeable mouse comes with programmable side buttons, a dynamic wheel and a long battery life. Highlights: - Soft side material - Ergonomic design - Blue optical sensor - 2-way scroll wheel (up / down) with configurable scrolling speed - On-the-fly DPI (three stages) adjustable via software up to 4000 DPI - Quickly connect with Bluetooth 5.1 and Swift Pair support - Cycle between paired devices with the Bluetooth pairing button - Get 3 months of use from a 2 hour refuel of the rechargeable battery - Programmable side and top buttons for custom shortcuts