Buttons: 3 buttons with scroll wheel. Tracking systems: Optical Optical technology works on most surfaces. Ergonomically designed, long-term use without fatigue. Intelligent connectivity, no need to code, plug & play. 100% brand new and high quality 3D button wireless mouse, symmetrical ergonomic design suitable for left and right hand use, feel comfortable, fitting hand type, ideal for durable office! USB micro receiver 1200DPI Super sensitivity, plug and play, advanced optical tracking technology for quick click and response progress web page preview is easy and smooth. 2.4G wireless transmission, zero delay Strong anti-interference ability, wireless connection range up to 10 meters (33 feet) Color: Black, White; Two-color simple classic does not fall behind Battery: 1*AA （not included） smart power-saving mode to enjoy wireless fun System Requirements: Windows 10 or later, Windows 8, Windows 7, Mac OS X 10.8 or later, Chrome OS
