Keychron K2 vs K2 Ultra
Choose the K2 Ultra for 8K polling, broader connectivity and deeper customization, or the lighter K2 if portability matters more.
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4.8 (35)4.8 · 35 reviews
from$52at Keychron
5.0 (3)5.0 · 3 reviews
from$119at MK
Which one should you get?
Get the
Keychron K2
Build quality in the top 50% of 75% boards under $100.
- 75% ANSI layout with Bluetooth, wired, and wireless connectivity.
- Hot-swappable switches and N-key rollover.
- 4000 mAh battery, with the vendor stating up to 570 hours with backlighting off.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Get the
Keychron K2 Ultra
polling rate
Build quality in the top 10% of 75% boards under $150.
- 8000 Hz polling in wired and 2.4 GHz modes, with Bluetooth also available.
- PBT keycaps, a steel plate, and a CNC aluminum and ABS case.
- Hot-swappable switches, QMK and VIA support, and Launcher remapping and macro features.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Choose the Keychron K2 Ultra if you want 2.4 GHz connectivity, 8K polling, PBT keycaps, and the listed QMK and VIA customization support. Choose the Keychron K2 if lower weight is the priority and its ANSI-only layout and north-facing LED compatibility rule suit your keycap plans.
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
Keychron K2 Ultra
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Aluminum, Plastic
ABS, Aluminum
Mount style
Tray Mount
Gasket Mount
Weight
794 g
1,084 g
Heavier boards stay planted and lighter ones travel
- Keychron K2
- Keychron K2 Ultra
- Performance
- 6890
- Build quality
- 6786
- Productivity
- 6794
- Customizability
- 6392
- Portability
- 8182
- Layout size: 75%
- Hot-swappable
- Battery: 4,000 mAh
- Switch options: Clicky, Linear, Tactile
What will you mostly use it for?
The K2 Ultra leads for gaming, office features, programming, modding, and content creation, mainly through its 2.4 GHz connection, richer customization features, and PBT build. The K2 is the travel pick because it weighs less, although the Ultra has the longer stated battery life. Both retain a compact layout and hot-swappable switches, so the decision largely comes down to the Ultra's expanded feature set versus the K2's lighter carry weight.
Pick the Keychron K2 Ultra
- The K2 Ultra lists an 8000 Hz polling rate in wired and 2.4 GHz modes, compared with the K2's 1000 Hz polling rate.
- The Ultra supports 2.4 GHz as well as Bluetooth and wired connections.
- The Ultra supports N-key rollover in wireless and wired modes; the K2 vendor description specifies NKRO for wired mode only.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K2
35 owner reviews
“It is an amazing keyboard. One thing, I don’t like that there is no battery indicator for this version so that I don’t when I need to charge it before it die out.”
Keychron K2 Ultra
3 owner reviews
“very compact, build quality is great, and I don't even feel any latency when using the keyboard wireless.”
Keychron K2 vs K2 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 25 specs differ
Keychron K2
Keychron K2 Ultra
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K2
No ISO layout at the stores we track.
Keychron K2 Ultra
Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you
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 vs K2 Ultra: your questions
The K2 Ultra adds 2.4 GHz connectivity, 8000 Hz polling in wired and 2.4 GHz modes, PBT keycaps, and QMK and VIA support. The K2 weighs less and has a 1000 Hz polling rate.
The K2 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes, while the K2 lists 1000 Hz. The Ultra also supports N-key rollover in wired and wireless modes, while the K2 vendor description specifies NKRO on wired mode only.
Yes, the K2 Ultra supports 2.4 GHz, Bluetooth, and wired connections. The standard K2 lists Bluetooth and wired connectivity, with no 2.4 GHz option in its listed specifications.
The K2 Ultra vendor page states up to 760 hours with backlighting off. The K2 vendor page states up to 570 hours with backlighting off, and both keyboards have a 4000 mAh battery.
Both models list hot-swappable switches. The K2 vendor description says its hot-swappable version accepts most MX-style 3-pin and 5-pin mechanical switches, with the tilde key limited to 3-pin switches.
The Keychron K2 is listed at 794 g, while the K2 Ultra is listed at 1084 g. The K2 is the lighter choice if carrying weight is a priority.
The K2 Ultra metadata lists both QMK and VIA support, and its vendor page describes the ZMK firmware and Keychron Launcher for remapping keys and creating macros. The K2 metadata does not list QMK or VIA support.
The standard K2 is listed as ANSI only, and its compatibility rules say ISO variants are not offered. The K2 Ultra lists ANSI and several ISO options, including ISO-ES, ISO-FR, and ISO-IT.
The K2's north-facing LEDs can interfere with Cherry-profile keycaps, according to its compatibility notes. Check the specific keycap set before choosing it for this board.
The K2 Ultra's compatibility note warns that shine-through legends stay dark with its south-facing LEDs. It also warns that some sculpted keycaps can clip the LED.
Both models list Mac and Windows support, and both vendor descriptions mention keycaps for macOS and Windows. The vendor pages also list Linux compatibility for each model.
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