Lenovo 4Y51S61874 Mouse - Wireless Multi Mode Pro 6000 Full size Optical Wireless Bluetooth/Radio Frequency 2.40 GHz Eclipse Black USB Type A 4000 dpi 4 Way Scroll 8 Button(s) Symmetrical 1 x AA Battery Supported 3 Year Battery Run Time

Designed for professional users who want to do more effectively and efficiently, the silent mouse offers ergonomic comfort for all-day-use. 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 4 ways dynamic wheel that matches your speed, helps you complete tasks with ease and professional-grade accuracy, and seamlessly connects to up to 3 devices via Bluetooth and 2.4GHz.