Lenovo 700 mouse Office Ambidextrous RF Wireless + Bluetooth Optical 4000 DPIDesigned for professional users who want to do more effectively and efficiently, the mouse offers ergonomic comfort for all day use with a skin friendly surface and soft side material. The mouse has high precision click, 3 level DPI Setting and up to 4000, it is perfect for tracking down to the tiniest detail. Multiple programmable buttons, a dynamic wheel that matches your speed, helps you complete tasks with ease and professional grade accuracy, and