uxcell PC Notebook Scroll Wheel Mice 3D USB Mini Optical Mouse Mice Green Product Name: USB Optical Mouse Interface Type: USB. Resolution: 1200 DPI. Casing Material: Plastic. Color: Green Cable Button Number: 3. System Requirement: Windows 2000, ME, XP and Vista Length: 54.8". Dimension: 3.7"(L) x 2"(W) x 1.3"(H) Weight: 80g. Package Contain: 1 x 3D Computer Mouse