The GEAR4U KM-30 Mouse is a rechargeable and wireless office mouse. The KM-30 has a stylish design and 3-stage adjustable DPI, USB receiver for quick Plug and Play setup and LED lights. The rechargeable battery has a battery time of multiple days and a charging time of a several hours.This computer mouse gives precision tracking on just about any surface, with a CPI button helping to change the sensitivity on the fly. Plug and play directly with a receiver stored in the battery compartment, no any driver needed!