Lenovo 400 Wireless Mouse 1200DPI Optical Sensor, 2.4GHz Wireless Nano USB 3-Button

From the manufacturerGet a strong connection with the 2.4 GHz USB receiver. Dock the receiver in the mouse itself when you’re done.The powerful 1200 DPI sensor and ergonomically sculpted design curbs the strain on hand even with long period usage.Gives you battery life of up to 12 months and left/right buttons that last up to 8 million clicks.