Feature: 1. With ergonomic design, this professional mouse fits your hand perfectly. 2. Thanks to its portable pocket-sized, you can take it wherever with your laptop on the go. 3. High precise optical engine, precise positioning,and effective response. 4. If there is no operation for long time, it will automatically turn into sleep mode for energy saving. Specification: This wired compact mouse provides a powerful, reliable connection with USB port. Plug and play directly. And it fits for left/right-handed. Features Thanks to its portable pocket-sized, you can take it wherever with your laptop on the go. If there is no operation for long time, it will automatically turn into sleep mode for energy saving. Wide Compatibility with most USB interface computers. With ergonomic design, this professional mouse fits your hand perfectly. High precise optical engine, precise positioning,and effective response. Specifications: DPI: 800DPI Buttons: 3 Type: Wired Item Weight: 41g / 1.45oz Package Weight: 59g / 2.08oz Item Size: 9.5 * 5.5 * 3cm / 3.74 * 2.17 * 1.18in （L * W * H） Package Size: 11 * 7 * 4.6cm / 4.33 * 2.76 * 1.81in （L * W * H) Package List: 1 * Wired Mouse Package List: 1 * Wired Mouse