Note: This review assumes the MX Master 4 continues Logitech’s iteration pattern based on official releases and early specs.
Should You Upgrade from MX Master 3S?
Short answer: No, unless your 3S is broken.
The MX Master line evolves slowly. The MX 4 focuses on:
- Minor sensor improvements
- Slightly better clicks
- Incremental battery efficiency
No workflow-changing feature has been introduced.
What’s New (Compared to 3S)
- Slightly quieter clicks
- Marginally improved tracking
- Refined thumb wheel tension
- Updated Bluetooth chipset
All improvements are incremental, not transformational.
Who Should Buy MX Master 4
- First-time buyers with no MX mouse
- People upgrading from very old mice (₹500–₹1,000 category)
Who Should Not
- Existing MX Master 3 / 3S owners
- Budget-conscious users
MX Master 3S vs MX Master 4
| Feature | MX Master 3S | MX Master 4 |
|---|---|---|
| Ergonomics | Excellent | Same |
| Scroll wheel | Excellent | Same |
| Productivity gain | High | Same |
| Value in India | Better | Worse |
Final Recommendation
In India, price matters.
If the MX Master 4 launches above ₹10k, the MX Master 3S is the better buy unless discounts apply.