Briefly, Z-Nano is the World's smallest optical mouse around. Measuring slightly larger than a USB connector, its features is not limited by its size. Z-Nano is a laser mouse that can be used on more surfaces, unlike regular mouse. You can even adjust its resolution from 100 to 1600 dpi (dots per inch), for different tasks like image editing and playing games. Z-Nano uses a medical grade wire that is slimmer and more reliable than regular mouse cords. No more frustrations with unreliable retractrable mechanism to manage wires, since Z-Nano uses a rare-earth, gold-plated magnet to snap the cable to the mouse. It also comes with auto-scroll special feature for reading. You can even personalise Z-Nano with your favourite photo. This small mouse really packs a punch. Small is really BIG! So if you are someone on the go, Z-Nano's compactness and uniqueness is an ideal choice for you.