... Optical Mouse For PC Laptop Specifications: 1. 2.4GHz free moving in 10 meters 2. Nano Super Mini receiver Plug and play ... 4. Built in mini-receiver design 5. Energy-saving techonology. 2 pieces of AAA alkaline battery supply over 3 months working time ... mm System Requirements: 1. IBM PC and compatibles with USB 2. Windows 95, 98, NT4.0, 2000, Me, XP, Vista, 7 ...