Features: 100% brand new and high quality. Quantity:1PC 3 buttons, including scroll wheel, left button, right button It adopts ergonomic design which is suitable for most people's hand feeling and ensures you cannot feel fatigued after working for a long time. Compatible for Windows 98 / XP / Vista / 7 / 8 or latest. Intelligent connectivity, no need to code, plug and play.Specifications: Connection way: USB cable DPI:1200 dpi Supported system: Windows 98/XP/Vista/7/8 Cable length:100cm Super mini size:9cm x 5cm x 3cm (L*W*H)Package Includes: 1 x Optical USB Wired Game Mouse Mice For PC Laptop Computer (without retail package)