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Head to head · Prices checked Oct 21, 2026

Fantech MAXFIT81 MK910 vs Keychron B3 Pro

Get the Fantech MAXFIT81 MK910 for hot-swappable and the 4,000 mAh battery.

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.

Fantech MAXFIT81 MK910

Keychron B3 Pro

  • Connection

    Bluetooth, Wired, 2.4 GHz

    Bluetooth, 2.4 GHz, Wired

  • Hot-swappable

    Yes

    No

  • Battery

    4,000 mAh

    1,200 mAh

  • Low profile

    No

    Yes

  • Case material

    ABS, Aluminum

    ABS

KeebFinder scores

How we score
  • Fantech MAXFIT81 MK910
  • Keychron B3 Pro
Performance
63
51
Build quality
68
43
Productivity
83
70
Customizability
82
48
Portability
81
79

What they share

  • Layout size: 75%
  • Switch options: Clicky, Linear, Tactile
See every spec side by side

Full specs

Fantech MAXFIT81 MK910 vs Keychron B3 Pro specs

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

15 of 25 specs differ

Fantech MAXFIT81 MK910

Keychron B3 Pro

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

Yes
No

Mount style

Gasket Mount
—

Low profile

No
Yes

Sound dampening

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

OLED
None

Media keys

No
Yes

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

4,000 mAhBetter
1,200 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum
ABS

Plate material

FR4
—

Keycaps

ABS, PBT
ABS

Weight

1,093 g
410 g

Dimensions

45 x 303 x 104 mm
3 x 100 x 380 mm

Typing angle

—
3°

Backlight

RGB, south-facing
None

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2023
2025

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $109Visit
  • AmazonGlobal

    Check price
    ~$109Visit
  • WhatGeekCN

    Out of stock
    $88Visit
  • KeychronHK

    In stock
    $34Visit
  • Keychron (DE)DE

    In stock
    $60Visit
  • AmazonGlobal

    Check price
    Visit

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