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Head to head · Prices checked Oct 21, 2026

Yunzii AL66 vs B75 Pro65% vs 75% Layout & Wireless Keyboard Choice

Choose the Yunzii B75 Pro for a more functional layout and higher polling rate, or the AL66 for maximum compactness and a larger battery.

YUNZII AL66 Knob CNC Aluminum Wireless Mechanical Keyboard

65%

Yunzii AL66

from$64

90-day low

Check priceSee all prices
YUNZII B75 PRO DE&FR Wireless Mechanical Keyboard - ISO Layout

75% Layout & Wireless Keyboard Choice

Yunzii B75 Pro

from$79at Yunzii

Shop nowCompare 2 stores

Quick verdict

Which one should you get?

Get the

Yunzii AL66

65%

If you want

  • More compact 65% layout saves significant desk space.
  • Larger 4600mAh battery capacity for longer wireless use.
  • Detailed sound dampening with Poron sandwich foam, socket foam, and PET pads.

And can live with

  • Lacks dedicated arrow and function keys, requiring layer use.
  • Heavier weight may reduce portability despite smaller size.
  • Only supports ANSI layout, not ISO.

Get the

Yunzii B75 Pro

75% Layout & Wireless Keyboard Choice

If you want

  • More functional 75% layout with arrow keys, function row, and navigation cluster.
  • Specified 4000Hz polling rate for potentially lower latency.
  • Supports both ANSI and ISO layouts.

And can live with

  • Smaller 4000mAh battery compared to the AL66.
  • Larger footprint takes up more desk space.
  • The vendor description does not detail specific foam materials like the AL66.

Bottom line

Your primary need dictates the choice. If you value every inch of desk space, prioritize wireless battery life, or enjoy detailed modding, the Yunzii AL66 is compelling. If you need a ready-to-work layout with arrow and function keys, plan on competitive gaming with a high polling rate, or want programmability, the Yunzii B75 Pro is the more versatile daily driver. Both offer excellent core features like tri-mode connectivity and hot-swap sockets.

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.

Yunzii AL66

Yunzii B75 Pro

  • Layout size

    65%

    75%

  • Battery

    4,600 mAh

    4,000 mAh

  • Case material

    Aluminum

    Plastic

  • Switch options

    Clicky

    Clicky, Linear, Tactile

  • Mount style

    Gasket Mount, Plate Mount

    Gasket Mount

KeebFinder scores

How we score
  • Yunzii AL66
  • Yunzii B75 Pro
Performance
73
75
Build quality
75
60
Productivity
78
91
Customizability
75
78
Portability
89
80

What they share

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

Best for

What will you mostly use it for?

The B75 Pro is the more practical choice for most productivity-focused tasks like office work, programming, and gaming due to its more complete layout and specified high polling rate. The AL66 wins for travel and desk space conservation thanks to its 65% size, and it appeals to modders with its well-documented internal foams. For content creation, the knob on both makes them equally viable, leaving the decision to layout preference.

For gaming

Pick the Yunzii B75 Pro

  • The B75 Pro lists a 4000Hz polling rate, which can offer lower latency.
  • Its 75% layout retains arrow keys for in-game menus without using layers.
  • The vendor description mentions a dedicated gaming mode accessible via the knob.

Full specs

Yunzii AL66 vs B75 Pro specs

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

12 of 24 specs differ

Yunzii AL66

Yunzii B75 Pro

Typing & switches

Switch options

Clicky
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount, Plate Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

65%
75%

Layout standard

ANSI
ANSI, Dvorak, ISO

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

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

Max polling rate

—
4,000 Hz

Battery

4,600 mAhBetter
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Plastic

Plate material

Polycarbonate
Aluminum

Keycaps

PBT
PBT, PC

Weight

1,145 g
937 g

Dimensions

42 x 113 x 322 mm
42 x 334 x 144 mm

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2024

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

Yunzii AL663 stores
  • AmazonGlobal

    Check price
    ~$64Visit
  • YunziiCN

    Out of stock
    $64Visit
  • MKUS

    Out of stock
    $90Visit
  • YunziiCN

    In stock
    $79Visit
  • MechkeysCN

    In stock
    $79Visit
  • AmazonGlobal

    Check price
    Visit

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FAQ

Yunzii AL66 vs B75 Pro: your questions

The AL66 is a 65% keyboard with a 322mm length, omitting the function row and navigation cluster. The B75 Pro is a 75% keyboard with a 334mm length, retaining the function row, arrow keys, and a compact navigation cluster. The B75 Pro offers more keys in a slightly wider footprint.

The Yunzii AL66 has a larger 4600mAh battery, while the B75 Pro has a 4000mAh battery. Based on capacity alone, the AL66 should offer longer usage between charges, assuming similar power management.

The Yunzii B75 Pro lists a 4000Hz polling rate, which is a higher refresh rate for keypress detection that can benefit gaming. Its 75% layout also includes dedicated arrow keys, which are useful for in-game controls without using modifier layers.

Yes, both the Yunzii AL66 and B75 Pro feature hot-swappable sockets. The AL66's vendor page specifies support for both 3-pin and 5-pin switches. The B75 Pro's description also states compatibility with 3-pin or 5-pin switches.

The Yunzii AL66 is more portable due to its smaller 65% footprint, making it easier to fit in a bag or use in confined spaces like on a laptop. However, it is notably heavier at 1145g compared to the B75 Pro's 937g.

Yes, both keyboards are listed as compatible with Mac and Windows operating systems. The B75 Pro's vendor description also mentions programmable software for the Windows system.

Both keyboards use a gasket mount design. The AL66's vendor description also lists plate mount, indicating its switches are mounted to a plate that is then suspended by gaskets.

Both keyboards use PBT keycaps. The AL66 uses dye-sublimated Cherry profile keycaps, while the B75 Pro uses double-shot PBT Cherry profile keycaps according to its specifications.

Yes, the Yunzii AL66 includes a metal knob. The vendor description states it can control RGB modes, brightness, or volume.

According to the vendor description, the Yunzii AL66 includes Poron sandwich foam, Poron socket foam, and PET sound pads for sound absorption. This level of detail is not provided for the B75 Pro.

The B75 Pro's vendor description mentions "more than 20 built-in backlight modes." The number of built-in modes for the AL66 is not specified, though it does feature south-facing RGB and side case lights.

Yes, the Yunzii B75 Pro includes screw-in stabilizers as listed in its extra features. The type of stabilizers on the AL66 is not specified in the provided information.

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