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Head to head · Prices checked Nov 2, 2026

Firstblood B21 vs Keychron K6 Pro

Get the Keychron K6 Pro for hot-swappable and qmk.

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Quick verdict

Which one should you get?

Get the

Firstblood B21

Build quality in the bottom 30% of 65% boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

Get the

Keychron K6 Pro

Hot-swappable

Build quality in the top 5% of 65% boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

What actually differs

The differences that matter

Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.

Firstblood B21

Keychron K6 Pro

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Case material

    Aluminum

    ABS, Aluminum, Plastic

  • Weight

    818 g

    890 g

    Heavier boards stay planted and lighter ones travel

  • QMK

    No

    Yes

    The deep option when you want to remap every key

  • VIA

    No

    Yes

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • Firstblood B21
  • Keychron K6 Pro
Performance
56
74
Build quality
53
89
Productivity
54
91
Customizability
46
96
Portability
83
88

What they share

  • Layout size: 65%
  • Connection: Bluetooth, Wired
  • Switch options: Clicky, Linear, Tactile
See every spec side by side

Full specs

Firstblood B21 vs Keychron K6 Pro specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

14 of 26 specs differ

Firstblood B21

Keychron K6 Pro

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

No
Yes

Mount style

—
PCB Mount, Tray Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

65%
65%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK, JIS

Ergonomics

Standard
Standard

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, Wired
Bluetooth, Wired

Max polling rate

—
1,000 Hz

Battery

—
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Aluminum, Plastic

Plate material

—
Steel

Keycaps

PBT
ABS, PBT

Weight

818 g
890 g

Dimensions

46 x 148 x 317 mm
27 x 317 x 107 mm

Typing angle

7°
4°, 6°

Backlight

White
RGB, south-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2022

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Firstblood B21

No ISO layout at the stores we track.

Keychron K6 Pro

  • Keychron

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW

    In stockShips to you

  • Keychron (DE)

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW

    In stockDoes not ship to you

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

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