A4tech OP-620D 2X Click Optical Mouse Dimension Mouse: 4.68L x 2.48W x 1.39H in. Product Weight: 0.19 Ib. Package Includes 2X Optical Mouse System Requirements Plug and Play for Windows98/Vista X86&X64 /ME/2000/XP(X64)/MCE2005/2003(X64)/MCE2005 Outbox Dimension 60pcs/1.44cuft/ctn 01 Year warranty
