Keychron K4 V3 vs Keydous NJ98QMK or Display
Get the Keychron K4 V3 for QMK customization, 1000 Hz polling, and ISO layouts; choose the Keydous NJ98 for its display, knob support, and 8000mAh battery.
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Which one should you get?
Get the
Keychron K4 V3
Build quality in the top 5% of 96% boards under $100.
- QMK and VIA support, with Keychron describing key remapping and macro customization.
- 1000 Hz polling rate and N-Key Rollover.
- ISO layout options, including UK, German, Swiss, and Nordic variants.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Get the
Keydous NJ98
Battery
Build quality in the top 10% of 98% boards under $150.
- Built-in screen for on-board information or controls.
- Knob support for an additional physical control.
- 8000mAh battery and 2.4 GHz wireless connectivity.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Choose the Keychron K4 V3 for QMK and VIA customization, its listed 1000 Hz polling rate, and ISO layout options. Choose the Keydous NJ98 if you want a built-in screen, knob support, and an 8000mAh battery. Buyers who need an ISO layout should choose the K4 V3, since the NJ98 is listed as ANSI only.
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 K4 V3
Keydous NJ98
Layout size
96%
98%
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Battery
4,000 mAh
8,000 mAh
A larger battery means fewer cables during the day
Case material
Aluminum, Plastic
Aluminum, Brass, Steel
Switch options
Clicky, Linear, Tactile
Clicky, Linear
- Keychron K4 V3
- Keydous NJ98
- Performance
- 8251
- Build quality
- 8777
- Productivity
- 9584
- Customizability
- 9684
- Portability
- 5465
- Hot-swappable
- Sound dampening
What will you mostly use it for?
The K4 V3 takes the lead for gaming, programming, and modding on the strength of its listed polling rate and firmware customization. Its ISO options also make it the more suitable pick for buyers who need an ISO layout. The NJ98 is the stronger fit for travel if battery capacity and 2.4 GHz connectivity matter, though its listed weight is 1400g. For content creation, its screen and knob support offer controls not listed for the K4 V3.
Pick the Keychron K4 V3
- The K4 V3 lists a 1000 Hz polling rate, while the NJ98 has no polling-rate figure listed.
- The K4 V3 supports QMK and VIA for key customization.
Keychron K4 V3 vs Keydous NJ98 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
15 of 27 specs differ
Keychron K4 V3
Keydous NJ98
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K4 V3
- Go to Keychron
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-CH
In stockShips to you
Keydous NJ98
No ISO layout at the stores we track.
Keychron K4 V3 vs Keydous NJ98: your questions
Choose the Keychron K4 V3 for QMK and VIA support, 1000 Hz polling, or an ISO layout. Choose the Keydous NJ98 if its built-in screen, knob support, and 8000mAh battery better suit your needs.
Yes, QMK support is listed for the K4 V3, and Keychron describes using its Launcher web app to customize keys. The product also lists VIA support.
Yes, the NJ98 is listed with a screen. The K4 V3 is listed without one.
Knob support is listed for the Keydous NJ98. The K4 V3’s listed extra features do not include knob support.
The K4 V3 is offered in ANSI and several ISO variants, including UK, German, Swiss, and Nordic. The NJ98 is listed as ANSI only.
The Keydous NJ98 lists an 8000mAh battery, while the Keychron K4 V3 lists 4000mAh. Battery capacity alone does not establish how long either keyboard lasts between charges.
The K4 V3 lists a 1000 Hz polling rate and N-Key Rollover. The NJ98 has no polling-rate figure listed, so the K4 V3 has the clearer gaming-specific specification here.
Hot-swappable support is listed for both keyboards. Keychron specifically says the K4 V3’s hot-swap sockets support 3-pin and 5-pin MX-style switches.
The K4 V3 is the clearer choice for firmware customization because it lists QMK and VIA support, and Keychron describes remapping keys and setting macros. The NJ98 listing does not specify either firmware feature.
Yes, 2.4 GHz wireless connectivity is listed for the NJ98, alongside Bluetooth and wired connections. The K4 V3 listing specifies Bluetooth and wired connectivity, but not 2.4 GHz.
Both use compact full-size layouts with a numpad, listed as 96% for the K4 V3 and 98% for the NJ98. Their compatibility notes caution that these layouts do not have the gaps of a full-size board.
Keychron lists north-facing LEDs for the K4 V3, and its compatibility note warns that Cherry-profile keycaps can hit the switch housing. The board also has south-facing LED options, for which the listed cautions concern shine-through legends and some sculpted keycaps.
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