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Ajazz AK820 Pro vs YUNZII B75 PRO

Researched, not hands-on tested.How we review ›

all judged against mechanical keyboards at a similar price

The YUNZII B75 PRO scores 6.7/10 overall, ahead of the Ajazz AK820 Pro at 6.3/10.

The Ajazz AK820 Pro leads on customisation and battery and software.

The YUNZII B75 PRO leads on typing feel, build quality and layout and ergonomics.

They score the same on connectivity.

Ajazz AK820 Pro

Ajazz AK820 Pro

6.3/10verdict: good, not the best

The Ajazz AK820 Pro is for people who want a compact 75% wireless keyboard with hot-swap switches and a gasket mount. It suits desk users who want a choice of Bluetooth, 2.4GHz or USB-C connections. It is a better fit for ANSI users and those happy with Ajazz's own software than for anyone who needs QMK/VIA.

Typically about £58.64 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

YUNZII B75 PRO

YUNZII B75 PRO

6.7/10verdict: buy

The YUNZII B75 PRO is for UK typists who want a compact, wireless 75% keyboard with an ISO layout and a knob. It suits people who care about typing sound and feel and who like the option of swapping switches later. It's less suited to anyone who wants open firmware such as QMK or VIA.

Typically about £66.29 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)

Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details

Scores, criterion by criterion

CriterionWeightAjazz AK820 ProYUNZII B75 PRO
Typing feel25%7/108/10
Build quality20%6/107/10
Customisation20%6/105/10
Connectivity15%7/107/10
Layout and ergonomics10%4/106/10
Battery and software10%7/106/10
Overall6.3/106.7/10

Specifications

SpecAjazz AK820 ProYUNZII B75 PRO
Layout75% ANSI (81 or 82 keys, sources conflict)75% with knob, 83-key ISO (ANSI variant 82-key)
SwitchesAJAZZ Gift Switch default; AJAZZ Flying Fish and AJAZZ Dreamy Switch alternatives; actuation force reported as 42g to 45g across reviewsVaries by variant: YUNZII Milk Linear, Cocoa Cream V2 Linear, or Blue Grey Tactile; pre-lubed
Hot-swappableYes, 5-pin sockets for all switches (3-pin and 5-pin compatible per one review)Full-key hot-swappable, supports 3-pin or 5-pin switches
ConnectivityBluetooth 5.1, 2.4GHz or USB-CBluetooth, 2.4GHz wireless, and wired Type-C
Firmware (QMK / VIA)Windows/MacOS compatible; QMK/VIA support unverifiedYUNZII software for key remapping, macros and RGB; Windows and macOS per manufacturer, Windows-only per Vivid Repairs review. No QMK/VIA support found
KeycapsDouble-shot PBT (sources disagree; one review says ABS)Double-shot PBT Cherry profile
BatteryUp to 4000 mAh; about 100 hours without light, 20 hours with RGB light (manual figures)4000mAh

Strengths and weaknesses

Ajazz AK820 Pro

  • + Gasket mount and a thocky sound praised by owners
  • + Hot-swap sockets for changing switches
  • + Bluetooth, 2.4GHz and USB-C connections
  • − ANSI layout rather than UK-style ISO
  • − RGB cuts battery life to about 20 hours

Skip it if:

  • Buyers who need QMK/VIA firmware for remapping
  • UK users who want an ISO layout
  • People who want RGB on all day and long battery life
Read the full Ajazz AK820 Pro review ›

YUNZII B75 PRO

  • + Gasket mount with pre-lubed switches and tuned stabilisers
  • + Owners praise the typing sound and battery life
  • + ISO layout with Bluetooth, 2.4GHz and wired modes
  • − No QMK or VIA support; remapping uses YUNZII software
  • − One review reports the software is Windows-only
  • − Switch type depends on which variant you buy

Skip it if:

  • Buyers who want QMK or VIA open firmware for remapping
  • Buyers who depend on the remapping software working on their operating system
  • Anyone who wants a tactile switch without checking the variant first
Read the full YUNZII B75 PRO review ›

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