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Webcam: Logitech C920 Mic: a Headphones: just standard ones Do everyone a favour and buy a good webcame and a USB mic. :)
Why a USB mic rather than a 3.5mm mic?
In general, USB mics are assumed to be a little more featureful (e.g. they have an on-board sound card). This is mostly an assumption, though. For super low end microphones, it's kind of difficult to compare specifications, so I'd just rely on user reviews on YouTube and the like.