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Head to head · Prices checked Oct 28, 2026

Keychron B39 vs Redragon TRUNDLE K668

Get the Redragon TRUNDLE K668 for hot-swappable.

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Quick verdict

Which one should you get?

Get the

Keychron B39

Build quality in the bottom 15% of 96% boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

Redragon TRUNDLE K668

Hot-swappable

Build quality in the top 20% of 100% boards under $100.

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.

Keychron B39

Redragon TRUNDLE K668

  • Layout size

    96%

    100%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired, Bluetooth, 2.4 GHz

    Wireless for several devices and wired for lower latency

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Low profile

    Yes

    No

  • Ergonomics

    Alice

    Standard

KeebFinder scores

How we score
  • Keychron B39
  • Redragon TRUNDLE K668
Performance
48
64
Build quality
44
70
Productivity
74
73
Customizability
44
57
Portability
49
51
See every spec side by side

Full specs

Keychron B39 vs Redragon TRUNDLE K668 specs

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

14 of 21 specs differ

Keychron B39

Redragon TRUNDLE K668

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear

Hot-swappable

No
Yes

Mount style

—
Bottom Mount, Gasket Mount

Low profile

Yes
No

Sound dampening

No
Yes

Layout

Layout size

96%
100%

Layout standard

ANSI
ANSI

Ergonomics

Alice
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired, Bluetooth, 2.4 GHz

Max polling rate

1,000 Hz
—

Battery

800 mAh
—

USB-C

Yes
Yes

Build & materials

Case material

ABS, Plastic
Plastic

Keycaps

ABS
ABS, PBT

Weight

680 g
880 g

Dimensions

—
37 x 364 x 133 mm

Backlight

None
RGB

Firmware & software

Mac & Windows

Yes
No

Extras

Released

2026
2023

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.

Keychron B392 stores

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