Logitech M171 Wireless Ambidextrous Optical Mouse Rose – has a fully ambidextrous design that easily fits within your laptop bag, so you can get to work anywhere, whether you’re left- or right-handed, with batteries 69.3 g, USB Receiver Sensor technology Smooth optical tracking DPI (Min/Max) 1000, Buttons Number of Buttons 3 (Left/Right-click, Middle click) Supported by Logi Options Plus on Windows and macOS , Scrolling Line-by-line scrolling Scroll Wheel, 2D and 2 years warranty carry-in.