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Head to head · Prices checked Nov 11, 2026

Ajazz AK820 Pro vs Keychron J2

Get the Ajazz AK820 Pro for the 4,000 mAh battery and knob. Get the Keychron J2 for qmk.

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Quick verdict

Which one should you get?

Get the

Ajazz AK820 Pro

Battery

Build quality in the top 25% of 75% boards under $100.

Rules this board out

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

Get the

Keychron J2

QMK

Build quality in the top 40% of 75% 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.

Ajazz AK820 Pro

Keychron J2

  • Battery

    4,000 mAh

    3,750 mAh

    A larger battery means fewer cables during the day

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Knob

    Yes

    No

  • Display

    TFT

    None

    A case display rather than a typing feature

  • QMK

    No

    Yes

    The deep option when you want to remap every key

KeebFinder scores

How we score
  • Ajazz AK820 Pro
  • Keychron J2
Performance
77
69
Build quality
75
71
Productivity
81
73
Customizability
72
86
Portability
79
73

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Ajazz AK820 Pro

4.6

256 owner reviews

Praise
“It's a nice keyboard, has a nice sound when typing. I like the dedicated volume know and it's easy to load gifs onto the little screen using the ajazz software”
David C.Verified buyer· via Epomaker
Critique
“So recently i started to notice my w key stop completely and have to press again and again for the input, please can you assist me in this matter”
Aniruddh C.Verified buyer· via Epomaker

Keychron J2

4.6

20 owner reviews

Praise
“I absolutely love this keyboard. It sounds amazing and the red switches are so smooth in feel. The colours are also great.”
WojciechVerified buyer· via Keychron
Critique
“The keyboard is nice, but it took over 3 weeks of shipping to arrive. On their website it says they deliver in a week or under to the US.”
JaydenVerified buyer· via Keychron

Full specs

Ajazz AK820 Pro vs Keychron J2 specs

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

12 of 25 specs differ

Ajazz AK820 Pro

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

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

TFT
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

4,000 mAhBetter
3,750 mAh

USB-C

Yes
No

Build & materials

Case material

ABS, Aluminum
—

Plate material

Polycarbonate
—

Keycaps

PBT
PBT

Weight

810 g
—

Dimensions

40 x 327 x 136 mm
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2023
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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