Nuphy Air75 V2 vs Keychron S1Wireless vs All-Metal Low-Profile
Choose the Nuphy Air75 V2 for wireless flexibility and portability, or the Keychron S1 for a heavier, all-metal wired build at a lower cost.
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from$75at Nuphy
4.8 (12)4.8 · 12 reviews
from$82at Keychron
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Which one should you get?
Get the
Nuphy Air75 V2
Wireless
Build quality in the top 15% of 75% boards under $100.
- Tri-mode wireless connectivity (Bluetooth 5.1, 2.4GHz, wired) for flexibility.
- Large 4000mAh battery with long estimated battery life.
- Includes sound-dampening features like plate poron, IXPE foam, and spacebar silicone.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Keychron S1
All-Metal Low-Profile
Build quality in the top 10% of 75% boards under $100.
- Full CNC machined aluminum body and steel plate for a solid, premium feel.
- Typically available at a more affordable price.
- Explicitly designed for easy assembly and customization per the vendor.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Your need for wireless freedom is the primary decider. If you work across multiple devices, value a clean desk, or plan to move the keyboard often, the Nuphy Air75 V2 is the clear choice. If you work at a single desk, prefer the heft and feel of an all-metal chassis, and want to save money, the wired Keychron S1 delivers excellent core functionality. Both are competent low-profile boards with strong customization support.
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 S1
Connection
Bluetooth, 2.4 GHz, Wired
Wired
Wireless for several devices and wired for lower latency
Case material
ABS, Aluminum
Aluminum
Switch options
Linear, Low-profile Mechanical, Tactile
Clicky, Linear, Tactile
Weight
598 g
960 g
Heavier boards stay planted and lighter ones travel
Sound dampening
Yes
No
- Nuphy Air75 V2
- Keychron S1
- Performance
- 8182
- Build quality
- 8082
- Productivity
- 8880
- Customizability
- 9489
- Portability
- 7965
- Layout size: 75%
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- QMK
- VIA
What will you mostly use it for?
The Nuphy Air75 V2 wins for mobile and multi-device scenarios like office work, travel, and content creation due to its wireless features and lighter weight. The Keychron S1 is the stronger choice for modders who value its all-metal construction and explicit design for customization. For stationary, single-PC use cases like gaming and programming, both keyboards are equally capable, making the decision one of wireless preference versus material preference.
It's a tie
- Both keyboards offer a 1000Hz polling rate for low latency.
- Both support N-key rollover for simultaneous key presses.
- The Air75 V2's wireless 2.4GHz mode offers cable-free convenience, while the S1's wired connection guarantees no potential for wireless interference.
Nuphy Air75 V2 vs Keychron S1 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 26 specs differ
Nuphy Air75 V2
Keychron S1
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 S1: your questions
No, the Keychron S1 is a wired-only keyboard. It connects via an included USB Type-C cable. The Nuphy Air75 V2 is the model that offers wireless connectivity.
Both keyboards are compatible with macOS and include Mac-specific keycaps. The Nuphy Air75 V2 vendor description highlights dedicated shortcuts for macOS features like Spotlight and Dictation implemented through QMK.
Yes, both the Nuphy Air75 V2 and the Keychron S1 (in its hot-swappable version) support hot-swappable switches. This allows you to change switches without soldering. The S1's PCB specifically supports Gateron low-profile mechanical switches.
Yes, the Keychron S1 has north-facing RGB LEDs with up to 22 lighting effects. However, the included double-shot PBT keycaps are not shine-through, so the backlighting may not illuminate the legends.
According to Nuphy's lab test results, the Air75 V2's 4000mAh battery lasts approximately 35-57 hours with all lights on, and up to 220 hours with all lights off.
The Keychron S1 is significantly heavier at 960 grams. The Nuphy Air75 V2 weighs 598 grams, making it over 350 grams lighter.
Yes, both keyboards fully support QMK and VIA firmware. This allows for extensive key remapping, macro creation, and lighting customization directly through the VIA configurator.
According to Keychron, the S1 is compatible with low-profile keycaps, as well as XDA and DSA profile keycaps. The manufacturer suggests using low-profile or relatively thin keycaps.
Both keyboards feature a 1000Hz polling rate. The Nuphy Air75 V2 achieves this in both its 2.4GHz wireless and wired modes, while the Keychron S1 offers it in its wired mode.
According to the vendor listing, 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 S1 features a full CNC machined aluminum body. The plate material is steel, contributing to its substantial 960-gram weight.
The Nuphy Air75 V2 vendor description lists several pre-installed sound-dampening features, including plate poron foam, an IXPE PCB foam sheet, and silicone in the spacebar. The Keychron S1 description does not mention pre-installed foam.
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