Compact 6-button compavct ambidextrous mouse/ On-the-fly DPI switch (800 DPI, 1600 DPI, 2400 DPI)/ Blue optical sensor/ 4-way scrolling (left, right, up, down)/ Plug-and-play 2.4 GHz USB-C wireless dongle / 1 x AA battery, up to 18 months of battery life/ Supports Lenovo USB-A or USB-C Unified Pairing Receiver