Logitech M317 Wireless Mouse, 2.4 GHz with USB Unifying Receiver, 1000 DPI Optical Tracking, 12 Month Battery, Compatible with PC, Mac, Laptop, Chromebook (Steel Blue) - Optical - Wireless - Radio Frequency - 2.40 GHz - Steel Blue - USB 2.0 - 1000 dpi - Scroll Wheel - 3 Button(s)