Logitech MX Master 4 vs. MX Master 3S: Is the Upgrade Worth It?

Design and Material Evolution

• 💡 The Logitech MX Master 4 and MX Master 3S share an identical ergonomic shape, but the MX Master 4 features a significant material upgrade.
• 🚀 The MX Master 3S uses a soft-touch rubber coating that can wear out or discolor, while the MX Master 4 swaps this for a more durable textured hard plastic with premium silicon side grips.

Button and Haptic Feedback Enhancements

• ✨ The MX Master 4 refines the quiet clicks of the 3S, making them softer, smoother, and equally satisfying.
• ➕ An extra button is added to the MX Master 4, bringing the total to eight for enhanced customization, a valuable bonus for power users.
• 🧠 A standout new feature in the MX Master 4 is haptic feedback on a button, offering a premium, responsive, and interactive user experience not present in the 3S.

Scroll Wheel and Performance

• ⚙️ Both mice feature the same max speed electromagnetic scroll wheel, known for its battery, smoothness, and precision.
• 🎯 The MX Master 4's scroll wheel is described as slightly tighter and better than the 3S's, offering a more refined feel.
• 🔍 Both mice are equipped with an 80,000 DPI Darkfield sensor, ensuring flawless performance on virtually any surface.

Connectivity and Horizontal Scrolling

• 🔌 The MX Master 4 utilizes a USB-C Logi Bolt receiver, while the MX Master 3S uses a USB-A receiver; both support Bluetooth 5.1.
• 👍 The horizontal scroll wheel on the MX Master 4 has been significantly improved, feeling smoother, tighter, and more precise, with just the right resistance to prevent accidental triggers.

Verdict: To Upgrade or Not?

• 📈 While not a complete redesign, the MX Master 4 offers smart refinements, particularly in materials, button feel, haptic feedback, and horizontal scrolling.
• ⚠️ If you are currently using an MX Master 3S, an upgrade to the MX Master 4 may not be essential as the 3S remains a great mouse.
• ✅ However, if you are using an MX Master 2S or older, upgrading to the MX Master 4 is highly recommended to experience significant improvements in speed, comfort, connectivity, and software features.