car mouse: comfortable shape; retractable USB cable available high quality with charming price 1. Comfortable shape for easy handling2. Optical technology for precise tracking, no cleaning required3. Resolution: 800/400dpi4. work on any surface except glass or mirror5. 3 buttons & a scroll wheel, supporting PS/2, USB or USB+PS/2 combo interface6. Various color shells available7. Retractable USB ...