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Head to head · Prices checked Nov 10, 2026

Lofree Flow Lite84 vs Keychron K3 Ultra

Get the Lofree Flow Lite84 for knob. Get the Keychron K3 Ultra for the 2,600 mAh battery and the 8,000 Hz polling rate.

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Quick verdict

Which one should you get?

Get the

Lofree Flow Lite84

Knob

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

Get the

Keychron K3 Ultra

Battery

Build quality in the top 30% of 75% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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.

Lofree Flow Lite84

Keychron K3 Ultra

  • Battery

    2,000 mAh

    2,600 mAh

    A larger battery means fewer cables during the day

  • Max polling rate

    1,000 Hz

    8,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Case material

    ABS

    ABS, Wood

  • Mount style

    Gasket Mount

    Plate Mount

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Lofree Flow Lite84
  • Keychron K3 Ultra
Performance
51
86
Build quality
63
75
Productivity
77
89
Customizability
60
86
Portability
54
82

What they share

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

Full specs

Lofree Flow Lite84 vs Keychron K3 Ultra specs

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

11 of 25 specs differ

Lofree Flow Lite84

Keychron K3 Ultra

Typing & switches

Switch options

—
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Plate Mount

Low profile

Yes
Yes

Sound dampening

Yes
Yes

Layout

Layout size

—
75%

Layout standard

ANSI
ANSI, ISO

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
8,000 HzBetter

Battery

2,000 mAh
2,600 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS
ABS, Wood

Plate material

—
Aluminum

Keycaps

PBT, PC
PBT

Weight

550 g
—

Dimensions

24 x 317 x 138 mm
—

Typing angle

3°
—

Backlight

White
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2025
2026

For EU buyers

ISO layouts by store

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

Lofree Flow Lite84

No ISO layout at the stores we track.

Keychron K3 Ultra

  • Keychron

    ISO

    In stockShips to you

  • Keychron (DE)

    ISO

    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.

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