Brand new Product specifications Transmission mode: Cable Port: USB Rated voltage/current: 5.0V/< 30mA Button: 3keys Product Features • Plug and Play USB connection • convenient and efficient. • Comfortable,classic appearance and ergonomic symmetry desin, • Mouse left and right button canreaches million times lifecycle. Tow byttons are sepeated and independent with rapid and acurate response • Mouse uses a high precision optical senser with a resolution of 1000DPI accurate positioning and stable operation