4 Button USB Wireless Mouse for Computer / pc / Laptop Power Saving Mouse Version: Silent (Mute) / Sound Color: Black / Red / Green / Grey Battery: 2 * AAA battery (Not included) 2000 DPI Key Life: 10 million times Wi-Fi Range :10m. 4 Button Wireless Mouse Computer (Left, Right, Scroll wheel, DPI) In package: 1 x Wireless Mouse (Without Battery) 1 x USB Receiver