Logitech's most advanced wireless mouse - now with even more options MX Master 4 is a high-performance mouse with haptic feedback, designed for an immersive and precise workflow you can feel. Save up to 33% of your time* with Actions Ring shortcuts, accessing tools and actions directly at your cursor. *Logitech Ergo Lab study (2025) with 37 MX Master mouse users tested across 8 desktop actions. Results may vary depending on assigned shortcuts. Contents: