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Head to head · Prices checked Nov 1, 2026

Ajazz AK820 Pro vs WOBKEY Rainy75 ProScreen or Metal

Choose the AK820 Pro for its TFT screen, knob and lighter build, or the Rainy75 Pro for its aluminum case, VIA/QMK support and larger battery.

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Quick verdict

Which one should you get?

Get the

Ajazz AK820 Pro

Knob

Build quality in the bottom 50% of 75% boards under $100.

If you want

  • Interactive TFT screen displays battery, time, OS and connectivity information.
  • Control knob is specified for volume and media playback.
  • 810g weight is lower than the Rainy75 Pro's 1800g.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

Get the

WOBKEY Rainy75 Pro

Battery

Build quality in the top 5% of 75% boards under $200.

If you want

  • CNC aluminum case with a steel external weight.
  • VIA and QMK support are listed, with VIA programming over wired and 2.4 GHz modes.
  • 7000mAh battery capacity exceeds the AK820 Pro's 4000mAh.

Rules this board out

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

Bottom line

Pick the Ajazz AK820 Pro if you want a lighter keyboard with an on-board TFT display and media knob. Choose the WOBKEY Rainy75 Pro if aluminum construction, ISO availability, VIA/QMK support and a larger battery matter more than portability or a screen.

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

WOBKEY Rainy75 Pro

  • Battery

    4,000 mAh

    7,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    ABS, Aluminum

    Aluminum, Steel

  • Switch options

    Linear

    Linear, Silent

  • Knob

    Yes

    No

  • Display

    TFT

    None

    A case display rather than a typing feature

KeebFinder scores

How we score
  • Ajazz AK820 Pro
  • WOBKEY Rainy75 Pro
Performance
61
79
Build quality
65
88
Productivity
82
94
Customizability
72
89
Portability
79
92

What they share

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

Best for

What will you mostly use it for?

The Rainy75 Pro has the edge for gaming, office work, programming and modding, mainly through its listed polling rate, firmware support and ISO option. The AK820 Pro is the more convenient choice for travel because it weighs much less, while both retain 75% layouts and wireless connections. For content creation, the AK820 Pro's display and media knob offer visible controls the Rainy75 Pro does not list. Both are hot-swappable gasket-mount keyboards, so neither is short on the core enthusiast features.

For gaming

Pick the WOBKEY Rainy75 Pro

  • The Rainy75 Pro lists a 1000 Hz polling rate.
  • It is hot-swappable and has N-Key Rollover, as does the AK820 Pro.

Full specs

Ajazz AK820 Pro vs WOBKEY Rainy75 Pro specs

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

13 of 26 specs differ

Ajazz AK820 Pro

WOBKEY Rainy75 Pro

Typing & switches

Switch options

Linear
Linear, Silent

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE

Ergonomics

Standard
Standard

Knob

Yes
No

Display

TFT
None

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
7,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum
Aluminum, Steel

Plate material

Polycarbonate
FR4

Keycaps

PBT
PBT

Weight

810 g
1,800 g

Dimensions

40 x 327 x 136 mm
30 x 320 x 150 mm

Typing angle

—
10°, 7°

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2025

For EU buyers

ISO layouts by store

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

Ajazz AK820 Pro

No ISO layout at the stores we track.

WOBKEY Rainy75 Pro

  • MonacoKeys

    ISO-DE

    In stockDoes not ship to you

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.

FAQ

Ajazz AK820 Pro vs WOBKEY Rainy75 Pro: your questions

The AK820 Pro has a TFT screen and control knob, while the Rainy75 Pro has a CNC aluminum case and lists VIA and QMK support. The Rainy75 Pro also has a larger battery, while the AK820 Pro weighs less.

The Ajazz AK820 Pro weighs 810g. The WOBKEY Rainy75 Pro weighs 1800g, making the AK820 Pro the lighter option for carrying between workspaces.

Yes, the AK820 Pro has an interactive TFT screen. The vendor describes it as displaying information such as battery, time, OS and connectivity.

The Rainy75 Pro lists both VIA and QMK support. Its product description specifies VIA programming over wired and 2.4 GHz modes.

The WOBKEY Rainy75 Pro has a 7000mAh battery, compared with 4000mAh in the Ajazz AK820 Pro. Battery capacity alone does not establish real-world runtime.

Yes, both keyboards are listed as hot-swappable. The AK820 Pro vendor description specifies compatibility with 3-pin and 5-pin mechanical switches.

The Rainy75 Pro is listed with ANSI and ISO options, including ISO-DE. The AK820 Pro's compatibility rules specify that ISO variants are not offered.

The WOBKEY Rainy75 Pro lists a 1000 Hz polling rate. The AK820 Pro vendor description also states 1k polling in wired and 2.4 GHz modes, and 125 Hz in Bluetooth mode.

Both keyboards list Bluetooth, 2.4 GHz and wired connectivity. Each also has a USB-C connection for wired use.

The AK820 Pro uses a polycarbonate plate, described by its vendor as flex-cut PC. The Rainy75 Pro uses an FR4 plate and has a flex-cut PCB.

Both keyboards have south-facing LEDs. Their compatibility notes warn that shine-through legends may stay dark and that some sculpted keycaps can clip the LED.

The Ajazz AK820 Pro includes a control knob that its vendor describes for volume and media playback. The Rainy75 Pro's listed features do not include a knob.

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