The A4Tech PK-635G is a basic 480p USB webcam with a built-in mic and anti-glare lens, for simple video calls and online classes on desktop PCs that have no camera.
To be clear about what it is: the PK-635G records at 640 x 480 pixels, not HD, so it suits WhatsApp desktop, Skype and classroom calls where a small video window is enough. In return it is easy to live with. A flexible pivoting tube lets you aim it and rotate it fully, and the silver-and-black finish sits neatly on a monitor. The coated lens cuts reflections from tube lights and windows, and A4Tech rates its low-light performance well. It works as a standard UVC camera, so Windows, Mac, Linux, ChromeOS and Android detect it without a driver. Fixed focus is set for 60 cm and beyond, roughly the distance to a desktop screen.
A4Tech PK-635G specifications
- Resolution: 480p, 640 x 480 pixels
- Frame rate: 30 fps; output MJPEG
- Lens: anti-glare coated; 52° viewing angle
- Focus: fixed, 60 cm and beyond
- Microphone: single, built-in
- Mount: flexible pivoting tube, 360° rotation
- Connection: USB 2.0, UVC
- Works with: Windows 7 or later, Mac OS 10.10+, Linux, ChromeOS, Android 6+
Want sharper video? Compare the PK-940HA 1080p webcam; both can be tested at our office.


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