Description: 100% brand new and high quality. 3 buttons, including scroll wheel, left button, right button It adopts ergonomic design, suitable for most people's hand feeling, and ensures that you will not feel tired after working for a long time. Specification: DPI: 1200 dpi Connection method: USB cable Cable length: 120cm Super mini size: 100 * 56 * 32mm Style: silent version, with sound version Package includes: 1 x wired mouse