Lenovo 400 1200 DPI Wireless Mouse w/ Nano Receiver (Black, GY50R91293)

Key Details:
Nano USB provides strong 2.4 GHz wireless connection
Responsive and clear tracking with 1200 DPI resolution optical sensor
Up to 8 million clicks for left and right buttons
Comfortable and functional in left or right hand
Lightweight for travel at 65 g (2.29 oz)
Battery life lasts up to 12 months(may vary based on usage)