Kailh Box Brown vs Kailh Speed Copper

The Kailh Box Brown and the Kailh Speed Copper are often cross-shopped. The main differences: the Kailh Speed Copper is lighter to actuate (40g versus 45g); travel is 3.6 mm on the Kailh Box Brown and 3.5 mm on the Kailh Speed Copper; stock they sound different: subtle, muted versus light, tappy.

Kailh Box Brown Tactile · 45g
Kailh Speed Copper Tactile · 40g

Choose the Kailh Box Brown if

  • you want a switch popular for light tactiles.
  • you want a switch popular for durability.
  • you want a heavier, more deliberate press (45g).
  • you want to spend less per switch.

Choose the Kailh Speed Copper if

  • you want a switch popular for fast tactiles.
  • you want a switch popular for gaming plus typing.
  • you want a lighter keystroke (40g).

Kailh Box Brown vs Kailh Speed Copper, spec by spec

Kailh Box BrownKailh Speed Copper
Type Tactile Tactile
Compatibility Standard MX sockets Standard MX sockets
Actuation force 45g 40g
Bottom-out force n/a n/a
Pre-travel 1.8 mm 1.1 mm
Total travel 3.6 mm 3.5 mm
Stem POM POM
Top housing PC PC
Bottom housing nylon nylon
Spring single-stage single-stage
Factory lube none none
Pins 3-pin 3-pin
Price / switch $0.30 (stronger spec) $0.35
Sound profile subtle, muted light, tappy
Released 2017 2016

Highlighted rows are where the two differ; a check marks the objectively stronger spec (price, battery, modability). Feel and preference rows never get a check. Fields marked n/a are unpublished by the maker; we list only verifiable numbers.

Where they sit among all 227 switches we track

Actuation force lightest heaviest
Kailh Box Brown 45g
Kailh Speed Copper 40g

22% of the 198 switches tracked here actuate lighter than the Kailh Box Brown; 7% of the 198 switches tracked here actuate lighter than the Kailh Speed Copper.

Total travel shortest longest
Kailh Box Brown 3.6 mm
Kailh Speed Copper 3.5 mm

34% of the 224 switches tracked here have shorter total travel than the Kailh Box Brown; 16% of the 224 switches tracked here have shorter total travel than the Kailh Speed Copper.

Price per switch cheapest priciest
Kailh Box Brown $0.30
Kailh Speed Copper $0.35

24% of the 193 switches tracked here cost less per switch than the Kailh Box Brown; 30% of the 193 switches tracked here cost less per switch than the Kailh Speed Copper.

Where to buy the Kailh Box Brown

No verified retailer link right now. Check the maker or your usual switch retailers.

Where to buy the Kailh Speed Copper

No verified retailer link right now. Check the maker or your usual switch retailers.

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