Nuphy Air75 V2 vs Keychron K3 V3Battery Life vs Layout Choice
Choose the Nuphy Air75 V2 for superior wireless battery life and a 2.4GHz connection, or the Keychron K3 V3 for its wider selection of ISO layouts and slightly slimmer build.
Which one should you get?
Get the
Nuphy Air75 V2
Battery Life
- Large 4000mAh battery for extended wireless use.
- Includes a 2.4GHz wireless connection with a 1000Hz polling rate.
- Comes with pre-installed sound-dampening foams (plate poron, IXPE) and spacebar silicone.
- Heavier (598g) and slightly taller than the K3 V3.
- Only available in ANSI layout, lacking ISO options.
- No user reviews are available for the K3 V3 to compare community feedback directly.
Get the
Keychron K3 V3
Layout Choice
- Available in multiple ISO layouts (UK, German, Swiss, Nordic).
- Slimmer build at 19mm tall and lighter at 540g.
- Features enhanced acoustic foams (IXPE, EPDM, latex) according to its listing.
- Smaller 1550mAh battery.
- Lacks a 2.4GHz wireless connection, relying solely on Bluetooth and wired modes.
- The vendor listing states its wireless polling rate is 90Hz, lower than the Air75 V2's 2.4GHz mode.
Your primary need dictates the winner. If uninterrupted wireless use, low-latency gaming, and a rich accessory ecosystem are critical, the Nuphy Air75 V2 is the stronger choice. If you require a specific ISO layout for your region or prioritize an ultra-slim, lightweight design for portability, the Keychron K3 V3 is the keyboard for you. Both offer excellent core features like hot-swap sockets and QMK/VIA programmability.
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.
Nuphy Air75 V2
Keychron K3 V3
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Battery
4,000 mAh
1,550 mAh
Switch options
Linear, Low-profile Mechanical, Tactile
Clicky, Linear, Tactile
Weight
598 g
540 g
Sound dampening
Yes
No
- Nuphy Air75 V2
- Keychron K3 V3
- Performance
- 8182
- Build quality
- 8082
- Productivity
- 8970
- Customizability
- 9489
- Portability
- 7974
- Layout size: 75%
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- Case material: ABS, Aluminum
- QMK
What will you mostly use it for?
The Nuphy Air75 V2 takes the lead for gaming and content creation due to its 2.4GHz wireless performance, gaming-optimized switches, and Mac-specific shortcuts. The Keychron K3 V3 is the clear choice for programmers needing ISO layouts and has a slight edge for travel due to its thinner profile. For office use and general typing, both are competent, with the choice boiling down to battery life versus layout preference.
Pick the Nuphy Air75 V2
- The Air75 V2 offers a 1000Hz polling rate in its 2.4GHz wireless mode, which Nuphy markets for low-latency gaming.
- Its Cowberry switch option has a shortened 1.2mm pre-travel for rapid actuation.
- The 4000mAh battery supports longer wireless gaming sessions.
Nuphy Air75 V2 vs Keychron K3 V3 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 26 specs differ
Nuphy Air75 V2
Keychron K3 V3
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
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
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Nuphy Air75 V2 vs Keychron K3 V3: your questions
The Nuphy Air75 V2 has a significantly larger 4000mAh battery compared to the Keychron K3 V3's 1550mAh battery. According to Nuphy's lab tests, this can provide up to 220 hours of use with lighting off, making it the clear choice for long wireless runtime.
No, the Keychron K3 V3 does not offer a 2.4GHz wireless mode. Its vendor description lists connectivity as Bluetooth and wired only. The Nuphy Air75 V2 includes a 2.4GHz dongle alongside Bluetooth and USB-C wired connections.
Yes, but only with the Keychron K3 V3. It is specifically offered in UK, German, Swiss, and Nordic ISO layouts. The Nuphy Air75 V2 is only available in an ANSI layout, which is the standard US layout.
Yes, both the Nuphy Air75 V2 and the Keychron K3 V3 (in its hot-swappable version) feature hot-swappable sockets. This allows you to change switches without soldering. The K3 V3 vendor notes compatibility with Keychron Milk POM or Gateron low-profile mechanical switches.
Both are compatible with macOS. The Nuphy Air75 V2 has a slight edge as its vendor description highlights dedicated keycaps for macOS functions like Spotlight and Dictation, and it lists extensive compatibility with MacBook models. The K3 V3 also includes Mac keycaps.
Yes, both offer pre-lubed switch options. The Nuphy Air75 V2's listed switches, including its floral series and Gateron 2.0 series, are described as factory lubed. The Keychron K3 V3's Milk POM switches are also described as pre-lubed.
The Nuphy Air75 V2 includes plate poron foam, IXPE foam on the PCB, and silicone in the spacebar. The Keychron K3 V3 listing mentions enhanced acoustic foams, specifically IXPE, EPDM, and latex foam, for sound and responsiveness.
Yes, both keyboards support the open-source QMK firmware and the VIA configurator (or Keychron Launcher for the K3 V3) for extensive key remapping, macro creation, and lighting customization without needing proprietary software.
The Keychron K3 V3 is thinner, with a height of 19mm and a weight of 540g. The Nuphy Air75 V2 is 14mm in its lowest dimension but weighs 598g. For slipping into a bag, the K3 V3's slimmer profile may be advantageous.
For its 2.4GHz wireless mode, the Nuphy Air75 V2 has a 1000Hz polling rate. The Keychron K3 V3, using Bluetooth, has a wireless polling rate of 90Hz according to its specifications. Both offer 1000Hz in wired mode.
According to its vendor page, the Air75 V2 box includes the keyboard, a USB-C cable, a 2.4G receiver, 7 extra keycaps, 4 extra switches, a keycap/switch puller, a sticker set, and a quick guide.
The Keychron K3 V3 listing shows available switch options as Keychron Milk POM Switch Red (linear), Brown (tactile), and Banana (tactile). It states compatibility with these and Gateron low-profile mechanical switches.
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