Logitech MX Master 4

Where to buy

Check price on Amazon.ca Check price on Amazon.com Logitech Canada

The Amazon.ca button opens the verified product page for this exact model; no live price is shown here. As an Amazon Associate, Direct To Growth Co. earns from qualifying purchases. The Amazon.ca button is an affiliate link; the Amazon.com button is not (yet).

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Pros

Sculpted shape with thumb rest and steel MagSpeed wheel
Haptic Actions Ring for app-specific shortcuts
8,000 DPI Darkfield sensor works on glass
Up to 70 days battery, USB-C, 3-device pairing

Cons

Right-handed only
Haptics add little outside supported apps
Pricier than the MX Master 3S it replaces
Mac edition is Bluetooth-only

Why it is on the owner's desk

Primary mouse; the MagSpeed wheel is what makes long spreadsheets bearable. The question it answers for a buyer: Is the MX Master 4 worth it over the 3S?

From the owner · T.R.
“Second MX Master in 18 months; the 3S from September 2024 still works. Whether the Actions Ring earned the upgrade or the 3S would have done is still an open question.”

Specs that matter

8,000 DPI Darkfield sensor
Haptic Actions Ring, 8 programmable buttons
Up to 70 days per charge, USB-C
Bluetooth or USB-C Bolt receiver; ~150 g

Alternatives weighed

Logitech MX Master 3S (previously owned, Sept 2024): same shape and MagSpeed wheel without the haptic ring; routinely US$75-90 on sale
Logitech MX Vertical (researched): if wrist angle matters more than the thumb wheel

Check before ordering

Right-handed only; ~150 g; the 'for Mac' SKU drops the USB receiver; wait for the periodic US$90-105 dips

Receipt on file: US$119.99, Amazon.com, 2026-03-31 (replaced an MX Master 3S bought Sept 2024). Purchased by Direct To Growth Co. Inc.; receipts are kept in the product registry, not published.

Sources checked

Corrections and updates

None yet. If a model, spec, price, or link is wrong, tell us.