Nuphy Air75 V3 vs Keychron K2 HE

	Nuphy Air75 V3 – Full specification	Keychron K2 HE – Full specification
Overview
Our Rating	9.0	8.8
Brand	nuphy	Keychron
Category	Keyboard	Keyboard
Genral Info
Brand	Nuphy	Keychron
Model Name	Air75 V3	K2 HE
Series	Air Series	K-Series
Type	Low-profile Mechanical (Wireless + Wired)	Magnetic Hall Effect (Wireless + Wired)
Layout	75% (Compact)	75% Compact
Release Year	2024	2025
Use Case	Work, Travel, Productivity	Work, Gaming, Productivity
DESIGN & BUILD
Frame Material	Aluminum top + polycarbonate bottom	Aluminum top frame + reinforced plastic bottom
Plate Material	Aluminum	Steel
Keycap Material	Dye-sublimated PBT (low-profile)	PBT (Double-shot)
Color Options	Basalt Black, Ionic White, Mist Blue	Black, Space Grey
Dimensions (L × W × H)	316 × 132 × 16.5 mm	313 × 123 × 38 mm
Weight	600 g	850 g
Form Factor	Compact 75%	Compact 75%
Finish	Anodized matte surface	Matte anodized texture
SWITCH & TYPING EXPERIENCE
Switch Type	Low-profile Mechanical (Hot-swappable)	Magnetic Hall Effect (Hot-swappable)
Switch Options	Gateron Low-profile 2.0 Red / Brown / Blue	Keychron Magnetic Linear / Tactile
Mount Type	Gasket mount	Gasket mount with dual silicone layers
Stabilizers	Pre-lubed plate-mounted stabilizers	Pre-lubed screw-in stabilizers
Typing Angle	Adjustable with magnetic feet	Adjustable (3 levels)
Key Rollover	Full N-key (wired) / 6-key (Bluetooth)	Full N-key (wired) / 6-key (Bluetooth)
Actuation Force	45 ± 5 g	40–45 g (adjustable)
Key Travel	1.8 mm actuation / 3.2 mm total	4.0 mm total
Typing Feel	Soft, snappy, precise feedback with low noise	Smooth, adjustable, low wobble
PERFORMANCE
Response Time (Bluetooth)	~8–10 ms	6–8 ms
Response Time (Bluetooth)	~8–10 ms	6–8 ms
Anti-Ghosting	100% NKRO	100% NKRO
Input Lag	Very low (Gaming Mode)	Negligible (Gaming Mode)
Latency Mode	Low-latency switch mode	Low-latency mode toggle
RGB & LIGHTING
Backlight Type	Per-key RGB	Per-key RGB
LED Orientation	South-facing	South-facing
Lighting Effects	20+ preset modes	22+ preset modes
Custom Effects	Supported (via VIA/NuPhy Console)	Supported (via VIA/VIAL software)
Brightness Levels	5-step adjustable	5-step adjustable
Control	Software + Function shortcuts	Software + onboard function controls
SOFTWARE & CUSTOMIZATION
Firmware	VIA / QMK compatible (open-source)	QMK / VIA compatible
Key Remapping	Fully programmable	Fully programmable
Macro Support	Yes	Multi-layer macros
Profile Storage	3 onboard profiles	Up to 3 onboard profiles
Firmware Update	Supported via USB-C	Supported via USB-C connection
Hotkey Shortcuts	Lighting, media, OS switch	RGB control, multimedia, layer switching
SOUND & COMFORT
Acoustic Dampening	Silicone pad + foam layer	Integrated silicone and foam layers
Typing Sound Profile	Muted, crisp low-profile sound	Soft, deep, and quiet
Gasket Mount	—	Provides cushioned, flexible typing
Noise Reduction	Optimized construction and dampers	Stabilizer pads and internal dampening foam
Wrist Rest	Optional accessory	Optional (sold separately)
Tilt Feet	2-level magnetic tilt risers	Dual-level adjustable
Support and compatibility
Software Support	macOS, Windows, Linux, iOS, Android	macOS, Windows, Linux, Android, iOS
Supported OS	—	VIA cross-platform
Plug-and-Play	Yes	Yes, no driver needed
Layout Options	macOS / Windows keycaps included	macOS / Windows keycaps included
BATTERY & CONNECTIVITY
Battery Capacity	4000 mAh	4000 mAh
Battery Type	Rechargeable lithium-ion	Lithium-polymer
Battery Life (No RGB)	Up to 250 hours	Up to 200 hours
Battery Life (RGB On)	70–90 hours	Around 80 hours
Charging Port	USB Type-C	USB Type-C
Charge Time	Approx. 3 hours	Approx. 3 hours
Wireless Mode	Bluetooth 5.1	Bluetooth 5.1
Wired Mode	USB-C	USB-C cable connection
Multi-Device Pairing	Yes, up to 3 devices	Yes, up to 3 devices
Switch Between Devices	Fn + 1/2/3	Fn + 1/2/3 shortcuts
Polling Rate (Wired)	1000 Hz	1000 Hz
Polling Rate (Wireless)	125 Hz	125 Hz