1600 DPI 1600 USB mouse USB Type-A HP Laser Mobile Mini Mouse, Refurbished, Laser, USB Type-A, 1600 DPI, Black HP Laser Mobile Mini Mouse, Refurbished. Movement detection technology: Laser, Device interface: USB Type-A, Movement resolution: 1600 DPI, Buttons type: Touch buttons, Buttons quantity: 4, Scroll type: Wheel. Product color: Black