[Unmatched connectivity] Our cutting-edge optical sensors excel in diverse environments, ensuring f lawless performance with impressive adaptability. Enjoy the freedom that Bluetooth 5.0 provideseffortlessly connecting devices without missing a beat.- [Ultimate comfort and design] Compact yet powerful, the human-centered shape and skin-friendly grip of the Lenovo WL310 will make long hours of use a breeze. Plus with three adjustable DPI settings, you can perfectly tailor your sensitivity to your needs- [Extra quiet clicks] Experience the serenity of a Micro Silent Mouse, where every left and right click is nearly inaudible. Relish in a distraction-free environment, whether youre studying or enjoying a late-night browsing session.- Supported OS :- Windows 8 and above Mac 10.10 and above- 1 Year Warranty || Included Items :- WL310 Mouse, AA Battery, User Guide, Common Warranty