Travel across the world, not just your desktop with the Legami Wireless Mouse with USB Receiver - Travel. Because life's too short for boring computer equipment. Precise, fast, easy to use: simply insert the battery and connect the USB receiver to your laptop or computer. Ambidextrous design Three speed options: 800 DPI, 1200 DPI, 1600 DPI USB 2.0 interface Number of buttons: 4 Type of scrolling: wheel Pointing sensor: optical LED Operating range: 10 metres The ultra compact USB receiver can be stored within the mouse for easy transport 2.4 GHZ wireless frequency 1 x AA Battery not included