Logitech MX Master 4 Wireless Mouse

Logitech MX Master 4 Wireless Mouse — Graphite | World's First Productivity Mouse with Customisable Haptic Feedback | Haptic Sense Panel — Snap, Notify, Desktop Switch, Slider Precision | Actions Ring — Up to 33% Time Saving / 63% Less Mouse Movement | 2× Stronger Connectivity vs MX Master 3S | 8,000 DPI Darkfield Sensor — Tracks on Glass | MagSpeed Electromagnetic Scroll — 1,000 Lines/sec | 8 Buttons + Thumbwheel + Gesture Button | Quiet Clicks — 90% Less Noise | 650 mAh — 70 Days / 1 Min = 3 Hr Fast Charge | Logi Bolt + Bluetooth LE — 3 Devices | Logi Options+ | Windows 11 Native Haptics Integration | 150g / 128.2×88.4×50.8 mm | 2-Year Warranty

The Logitech MX Master 4 in Graphite is Logitech's most advanced wireless productivity mouse — the first productivity mouse in the world to offer customisable haptic feedback, introducing the Haptic Sense Panel and Actions Ring as the two defining innovations that separate the MX Master 4 from every previous mouse in the MX Master series and from every competing productivity mouse at any price point, while retaining and improving the 8,000 DPI Darkfield sensor, MagSpeed Electromagnetic scroll wheel, MagSpeed thumbwheel, Quiet Click technology and Logitech Flow multi-computer cursor movement that made the MX Master series the professional productivity mouse standard. The Haptic Sense Panel is the silicone-surfaced area on the top of the MX Master 4 that houses the haptic actuator — a system of precision electromagnetic vibration motors that produce a library of distinct waveforms, each associated with a specific interaction event in the digital workspace: the snap sensation when an image aligns to a grid in Photoshop, the click of a slider reaching its end stop, the pulse of a desktop notification arriving, the tactile confirmation of a virtual desktop switch, the indexed feel of scrolling through preset values in a colour picker, and dozens of additional waveforms that are customisable in intensity and assignable to specific actions and applications through Logi Options+. Windows 11's native Advanced Haptics integration (available from the March 2026 Windows 11 update) extends the haptic feedback to system-level interactions — window snapping, PowerPoint alignment guides and other OS-level actions — controlled directly from Windows settings without requiring Logi Options+ for those system interactions, making the MX Master 4 the first productivity mouse to have haptic feedback integrated at the operating system level as a native feature rather than an application-layer overlay.

The Actions Ring is the second major innovation — a radial menu that appears at the cursor position when the gesture button is held, presenting a ring of customisable shortcut icons from which the user selects an action by moving the cursor in the direction of the desired shortcut and releasing. A Logitech Ergo Lab study with 37 MX Master users across 8 desktop actions found that Actions Ring reduced task completion time by up to 33% and mouse movement by up to 63% compared to navigating to the same actions through application menus or taskbar icons — because the ring appears at the cursor rather than requiring the cursor to travel to a fixed UI location, eliminating the physical distance the mouse must cover and the visual attention required to locate the target. The ring is fully customisable in Logi Options+ — different rings can be configured for different applications, and plugins for third-party apps including Adobe Creative Suite, Final Cut Pro and others bring application-specific tools directly into the ring. The 2× stronger connectivity over the MX Master 3S comes from a higher-performance wireless chip and an optimised antenna placement that maintains connection quality in dense wireless environments — open-plan offices, co-working spaces and conference rooms where dozens of Wi-Fi networks and Bluetooth devices compete for spectrum — where the MX Master 3S's connectivity could degrade. The 650 mAh battery — up from the MX Master 3S's 500 mAh — extends battery life to 70 days on a full charge, with a 1-minute fast charge providing 3 hours of use and a full charge completing via USB-C. The 8,000 DPI Darkfield sensor tracks on any surface including glass at 4mm minimum thickness, adjustable from 200 to 8,000 DPI in 50 DPI increments. MagSpeed scrolls 1,000 lines per second in hyper-fast mode and switches automatically or manually to ratchet mode. Quiet Clicks deliver 90% less sound power than the MX Master 3. Made with 54% post-consumer recycled plastic and a battery using 100% recycled cobalt. Pairs with up to 3 devices via Logi Bolt and Bluetooth LE. 2-year warranty.