... mouse 1. free of drive, no space limitation 2. plug and play 3. Interface USB 4. Effective distance within 10M finger ... , no space limitation, free of drive2. Innovative design, plug and play3. Compatible with Windows95/98/2000/ME/XP/7, ... Musculo-Skeletal Disorders *Perfect for home, office, or travel9. Adopts optical orientation technology, high accuracy and reliability10. Certificates: CE, FCC, ...