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Air75 V3 Keyboard / NuPhy

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The Air75 V3 is a 75% wireless mechanical keyboard in low profile, built on Gateron Low-Profile 3.0 switches with 3.5mm of travel, meaningfully longer than most low-profile boards and close enough to full-height that the usual low-profile compromise largely disappears. An aluminium top case sits over a gasket-mounted PCB with several internal dampening layers, giving a sound and feel the tray-mounted V2 could not reach. Double-shot PBT keycaps, three switch options including a silent linear, and Mac and Windows compatibility round it out. It connects over Bluetooth, a 2.4GHz dongle or USB-C, and the 4,000mAh battery is rated up to 1,200 hours without backlighting. The top-right corner takes either a rotary knob or a standard key, so the layout serves media control or a navigation column without committing to one.

Design intent

The gasket mount introduces flex between PCB and case that softens each keystroke and kills the hollow resonance typical of low-profile boards, closing the gap to full-height feel more than switches alone could.
Making the top-right position accept either a knob or a key lets one board suit volume control for media work or a conventional navigation column for text, without locking into a single use.

Trade-offs

The top-right module is swappable rather than fixed, and a removable knob is inevitably a little less solid than a built-in one, the cost of the flexibility.
NuPhy's browser-based IO 2.0 software is functional but less capable than QMK or VIA, which limits depth for anyone coming from more open keyboard platforms.