Keyboards

hirotomi Split40

A 44-key, row-staggered 40% split keyboard that connects over Bluetooth, runs ZMK firmware and takes Kailh low-profile switches.

Key specs auto-matched against source pages · Last verified: 2026-10-17

hirotomi Split40
Image: © hirotomi (Manufacturer image)
~¥22,500

Where to buy

No US retailer found yet.

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Pros

  • Pairs with up to five devices over Bluetooth
  • Keymap can be changed in ZMK Studio without a GitHub account
  • The two halves can be joined into a single board
  • Assembled units ship with firmware already flashed

Cons

  • Switches and keycaps must be bought separately, even for assembled units
  • Row stagger with no thumb cluster
  • Small 200mAh battery

Specs

SplitSplit
StaggerRow-staggered
TentingNone
KeywellNo
Thumb clusterNo
Keys44
LayoutsCustom
SwitchesLow-profile
Hot-swapYes
FirmwareZMK
DIY kitNo
ConnectivityBluetooth
OSwindows, macos
Released2025
Sources
AD · detail-mid

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