The Lenovo 400 Wireless Mouse (GY50R91293) provides a clean, cable-free workspace using a 2.4 GHz wireless connection via a compact USB Nano receiver. Its optical sensor offers a tracking resolution of 1200 DPI, ensuring smooth cursor movement across various surfaces for your daily computing tasks on Windows systems. Designed with an ambidextrous shape and a lightweight plastic build in a classic black color weighing only 65 g, this mouse fits comfortably in either hand. It features three buttons, with the left and right clicks rated for up to 8 million presses, while its compact dimensions of 37 x 63 x 106 mm make it easy to slip into a laptop bag. Power is supplied by a single AA battery, which can last up to 12 months depending on how often you use it. To further preserve energy when the device is not in use, you can simply flip the integrated on/off switch.