Head to head · Prices checked Nov 7, 2026

Keychron K2 HE vs MelGeek O2

Get the Keychron K2 HE for hall effect and rapid trigger.

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Hall effect

Keychron K2 HE

4.3 (55)4.3 · 55 reviews

from$129at Keychron

Compare 5 stores

MelGeek O2

O2 Tri-mode Wireless Mechanical Keyboard

No reviews

from$129at MelGeek

Compare 2 stores

Quick verdict

Which one should you get?

Get the

Keychron K2 HE

Hall effect

Build quality in the top 5% of 75% boards under $150.

Rules this board out

Magnetic switches only. Standard MX switches will not fit.
North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
No numpad.

$129 at Keychron

Get the

MelGeek O2

Build quality in the top 50% of Numpad boards under $150.

Rules this board out

Switches are soldered. Swapping them means soldering.
North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Numpad only. This is not a full keyboard.

$129 at MelGeek

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 HE

MelGeek O2

Layout size
75%
Numpad
Hall effect (magnetic)
Yes
No
Adjustable actuation helps in games and not in normal typing
Rapid trigger
Yes
No
Faster resets help in games and not in normal typing
Hot-swappable
Yes
No
Switch changes without soldering
Battery
4,000 mAh
2,500 mAh
A larger battery means fewer cables during the day

KeebFinder scores

How we score

Keychron K2 HE
MelGeek O2

Performance: 93
54
Build quality: 91
65
Productivity: 97
54
Customizability: 98
50
Portability: 81
83

What they share

Connection: Bluetooth, 2.4 GHz, Wired
Max polling rate: 1,000 Hz
Sound dampening

See every spec side by side

Full specs

Keychron K2 HE vs MelGeek O2 specs

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

21 of 29 specs differ

Spec

Keychron K2 HE

MelGeek O2

Typing & switches

Switch options

Linear, Magnetic

—

Hall effect (magnetic)

Yes

Rapid trigger

Yes

Hot-swappable

Yes

Mount style

Plate Mount, Tray Mount

Gasket Mount

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Numpad

Layout standard

ANSI, ISO, ISO-CH, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-UK, JIS

ANSI

Ergonomics

Standard

Knob

Yes

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

Battery

4,000 mAhBetter

2,500 mAh

USB-C

Yes

Build & materials

Case material

ABS, Aluminum, Resin, Wood

ABS, Aluminum, Polycarbonate

Plate material

Aluminum

Polycarbonate

Keycaps

ABS, PBT, PC

PBT

Weight

1,743 g

650 g

Dimensions

41 x 127 x 321 mm

135 x 326 x 27 mm

Typing angle

12°, 4°, 5°

4°

Backlight

RGB, north-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2024

2025

For EU buyers

ISO layouts by store

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

Keychron K2 HE

Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-CH
In stockShips to you
Input Gear
ISO-DE
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-CH
In stockDoes not ship to you

MelGeek O2

No ISO layout at the stores we track.

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.

Keychron K2 HE5 stores