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Head to head · Prices checked Oct 28, 2026

Redragon EISA MAX K686 vs Keychron J2

Get the Redragon EISA MAX K686 for knob. Get the Keychron J2 for qmk and via.

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Quick verdict

Which one should you get?

Get the

Redragon EISA MAX K686

Knob

Get the

Keychron J2

QMK

Build quality in the top 40% of 75% boards under $100.

Rules this board out

  • No numpad.

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.

Redragon EISA MAX K686

Keychron J2

  • Layout size

    90%

    75%

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Knob

    Yes

    No

  • 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
  • Redragon EISA MAX K686
  • Keychron J2
Performance
67
70
Build quality
63
71
Productivity
84
74
Customizability
67
86
Portability
52
73

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Redragon EISA MAX K686 vs Keychron J2 specs

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

9 of 23 specs differ

Redragon EISA MAX K686

Keychron J2

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
Yes

Layout

Layout size

90%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

—
3,750 mAh

USB-C

Yes
No

Build & materials

Case material

Plastic
—

Keycaps

PBT
PBT

Weight

1,200 g
—

Dimensions

90 x 430 x 90 mm
—

Backlight

RGB
RGB

Firmware & software

QMK

No
Yes

VIA

No
Yes

Mac & Windows

Yes
No

Extras

Released

2024
2025

Where to buy

Compare prices

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

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

Keychron J23 stores

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