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Head to head · Prices checked Oct 23, 2026

Ajazz AK820 Max Plus vs Keychron J2

Get the Ajazz AK820 Max Plus for the 8,000 mAh battery and knob. Get the Keychron J2 for qmk.

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 Max Plus

Keychron J2

  • Battery

    8,000 mAh

    3,750 mAh

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Knob

    Yes

    No

  • Display

    TFT

    None

  • QMK

    No

    Yes

KeebFinder scores

How we score
  • Ajazz AK820 Max Plus
  • Keychron J2
Performance
52
70
Build quality
58
71
Productivity
84
74
Customizability
61
86
Portability
92
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 Max Plus

4.0

5 owner reviews

Praise
“This keyboard is designed to work with windoz and Mac. But I can't find Apple replacement keycaps anywhere. This is the only reason it gets 4 stars instead of 5.”
Jeff E.Verified buyer· via Epomaker
Critique
“Screen - it's pretty decent for the price, it works as long as you don't customize the GIF or the JPEG as the software DOES NOT WORK .. it will say it's updated or the screen was updated with the JPEG or GIF you choose but it will only show a white screen …”
Jellyaceeeeey· via Epomaker

Keychron J2

4.4

11 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 Max Plus vs Keychron J2 specs

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

11 of 23 specs differ

Ajazz AK820 Max Plus

Keychron J2

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

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

8,000 mAhBetter
3,750 mAh

USB-C

Yes
No

Build & materials

Case material

ABS
—

Plate material

FR4
—

Keycaps

PBT
PBT

Weight

850 g
—

Dimensions

20 x 333 x 143 mm
—

Backlight

None
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.

Lowest price across stores, Amazon excluded.

  • AmazonGlobal

    Check price
    ~$57Visit
  • WhatGeekCN

    Out of stock
    $57Visit
Keychron J23 stores
  • KeychronHK

    In stock
    $59Visit
  • Keychron (DE)DE

    In stock
    $105Visit
  • AmazonGlobal

    Check price
    ~$59Visit

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.

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