Head to head · Prices checked Nov 10, 2026

Keychron K2 Ultra vs K3 V3

Get the Keychron K2 Ultra for the 4,000 mAh battery and the 8,000 Hz polling rate.

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Battery

Keychron K2 Ultra

5.0 (3)5.0 · 3 reviews

from$119at MK

Compare 4 stores

Keychron K3 V3

Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3

No reviews

from$84at MK

Compare 4 stores

Quick verdict

Which one should you get?

Get the

Keychron K2 Ultra

Battery

Build quality in the top 10% of 75% boards under $150.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Missing ISO-DE, ISO-UK, ISO-Nordic. The other board is sold in those layouts.

$119 at MK

Get the

Keychron K3 V3

Build quality in the top 10% of 75% boards under $100.

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.
Missing ISO-FR, ISO-ES, ISO-IT. The other board is sold in those layouts.

$84 at MK

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.

Keychron K2 Ultra

Keychron K3 V3

Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Wireless for several devices and wired for lower latency
Battery
4,000 mAh
1,550 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Max polling rate
8,000 Hz
1,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Mount style
Gasket Mount
PCB Mount, Plate Mount, Top Mount

KeebFinder scores

How we score

Keychron K2 Ultra
Keychron K3 V3

Performance: 90
82
Build quality: 86
82
Productivity: 94
80
Customizability: 92
89
Portability: 82
77

What they share

Layout size: 75%
Hot-swappable
Case material: ABS, Aluminum
Switch options: Clicky, Linear, Tactile
QMK
VIA

See every spec side by side

Full specs

Keychron K2 Ultra vs K3 V3 specs

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

14 of 27 specs differ

Spec

Keychron K2 Ultra

Keychron K3 V3

Typing & switches

Switch options

Clicky, Linear, Tactile

Hot-swappable

Yes

Mount style

Gasket Mount

PCB Mount, Plate Mount, Top Mount

Low profile

Yes

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Layout standard

ANSI, ISO, ISO-ES, ISO-FR, ISO-IT

ANSI, ISO, ISO-DE, ISO-Nordic, ISO-SW, ISO-UK

Ergonomics

Standard

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Bluetooth, Wired

Max polling rate

8,000 HzBetter

1,000 Hz

Battery

4,000 mAhBetter

1,550 mAh

USB-C

Yes

Build & materials

Case material

ABS, Aluminum

Plate material

Steel

Aluminum

Keycaps

PBT

ABS, PBT

Weight

1,084 g

540 g

Dimensions

31 x 312 x 122 mm

19 x 306 x 116 mm

Typing angle

—

3°

Backlight

RGB, south-facing

RGB, north-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2026

2024

For EU buyers

ISO layouts by store

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

Keychron K2 Ultra

Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you

Keychron K3 V3

Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you

Where to buy

Compare prices

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

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Lowest price across stores, Amazon excluded.

Keychron K2 Ultra4 stores