Maintain precise control for prolonged sessions and dense wireless environments. MX Master 4 for Business centers on outcome: accurate tracking, faster navigation and predictable multi‑device switching for professional workflows. The 8,000 DPI Darkfield sensor tracks on glass and uneven surfaces; MagSpeed electromechanical scrolling toggles between ratcheted and free‑spin modes for long documents and spreadsheets. A new Actions Ring provides instant, thumb‑proximate macro access while Quiet Click reduces audible noise across heavy use. Haptic feedback confirms scroll mode and action inputs without visual interruption. Dual wireless options and improved RF handling deliver two times more powerful connectivity in congested spaces, lowering dropout risk during presentations and remote support sessions. USB‑C charging simplifies fleet operations. MX Master 4 for Business is aimed at infrastructure and desktop teams that need predictable ergonomics, programmable controls and resilient wireless connectivity — a reasoned step above commodity mice for demanding environments.