Bezdrátový mikrofon je u webkamery.

Because the preposition u requires the genitive case.

• Dictionary form: webkamera
• After u: u webkamery

So u webkamery means by / near / at the webcam.

This is a very common pattern in Czech:

• u domu = by the house
• u školy = by the school
• u webkamery = by the webcam

Here u means something like by, near, or at.

So Bezdrátový mikrofon je u webkamery means the wireless microphone is located near the webcam.

It does not necessarily mean it is physically touching it. It just means it is in its immediate vicinity.

Because it agrees with mikrofon.

In Czech, adjectives must match the noun in:

• gender
• number
• case

mikrofon is:

• masculine inanimate
• singular
• nominative here

So the adjective also has the masculine singular nominative form:

• bezdrátový mikrofon = wireless microphone

If the noun changed, the adjective would change too.

It is in the nominative case because it is the subject of the sentence.

The sentence structure is:

• Bezdrátový mikrofon = subject
• je = is
• u webkamery = location phrase

So the basic pattern is: [subject] + [is] + [location]

Yes. Czech word order is fairly flexible.

You could also say:

U webkamery je bezdrátový mikrofon.

This still means the same thing, but it may shift the emphasis slightly.

• Bezdrátový mikrofon je u webkamery.
  Focuses more naturally on the microphone.
• U webkamery je bezdrátový mikrofon.
  Focuses more on the location.

Both are grammatical.

Because Czech does not have articles like English a/an and the.

So:

• mikrofon can mean a microphone or the microphone
• webkamera can mean a webcam or the webcam

The exact meaning depends on context.

Not exactly.

• u = by, at, near
• vedle = next to, beside

u is a bit broader and less exact.
vedle usually suggests something more specifically right beside something else.

So:

• Mikrofon je u webkamery. = The microphone is by/near the webcam.
• Mikrofon je vedle webkamery. = The microphone is next to the webcam.

Here are the dictionary forms:

• bezdrátový = wireless
• mikrofon = microphone
• být = to be
  
  • je = is
• webkamera = webcam

So the sentence is built from very standard dictionary forms, except that webkamera changes to webkamery because of u.

A rough pronunciation guide for an English speaker is:

BEZ-draa-toh-vee MEE-kroh-fon yeh oo WEB-kah-meh-ree

A few helpful notes:

• ř does not appear here, so that helps.
• á is a long a sound.
• ý is a long ee-like sound.
• Czech stress is usually on the first syllable of each word:
  • BEZdrátový
  • MIkrofon
  • WEBkamery

Yes. It is a normal modern Czech word, even though it comes from English elements.

Czech uses many international or borrowed technology words, and webkamera is completely natural. It behaves like a regular Czech noun:

• nominative: webkamera
• genitive: webkamery
• dative: webkameře
• accusative: webkameru

So even borrowed words usually follow Czech grammar patterns.

Normally, no. In a standard sentence like this, je should be present.

Czech usually keeps the present-tense form of být:

• Mikrofon je u webkamery.

You might sometimes see omission in special styles such as headlines, notes, or very informal fragments, but in normal full sentences, je is used.