A4 Tech NB-40 BatteryFree Wireless
- High Optical Precision Resolution - Mouse Pad Transfers Instant & Constant Power to the Mouse as a Replacement of Batteries - Product Dimension Mouse: 12.1(L) x 6.2(W) x 3.8(H) cm Mouse Weight: 86g. Mouse Pad Weight: 195 g. Mouse Pad: 17.3(L) X 4.8(W) X 1.3(H) cm - System requirements Plug and Play for Windows98/ME/2000/XP(X64)/2003(X64)/MCE2005/Vista X86&X64