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:1000 dpi Supported system: Windows 98/XP/Vista/7/8 Cable length:1.2cm Super mini size:9.7cm x 4.7cm x 3.3cm (L*W*H) Long battery life: Thanks to energy-saving engineering, the battery replacement interval can reach 18 months, and the silent mouse automatically goes to sleep when not in use to save battery life Universal design for both left and right hands: This wireless mouse is ergonomically designed, more comfortable and precise than a touchpad, suitable for left-handed and right-handed users, and small enough to be carried in a bag Vivid color options: Personalize your workspace with the eye-catching colors of this wireless mouse, adding a touch of style to your desk. Portable and durable - The USB receiver plugs into a PC USB port and can be conveniently stored inside the wireless mouse when not in use. Perfect for work and play at home or in the office.