Беспроводной микрофон лежит на столе.

Микрофон is in the nominative case because it is the subject of the sentence — the thing doing the action or being described.

Its dictionary form is also микрофон, so in this sentence the nominative looks the same as the basic form.

Беспроводной is an adjective meaning wireless, and it must agree with микрофон in gender, number, and case.

Here, микрофон is:

• masculine
• singular
• nominative

So the adjective is also masculine singular nominative: беспроводной.

In other words, беспроводной микрофон is a matched adjective + noun pair.

Russian often uses verbs like:

• лежать = to lie
• стоять = to stand
• висеть = to hang

when describing where something is located.

So лежит на столе literally means is lying on the table.

This is more natural in Russian than using a very general verb. A more neutral option like находится is possible, but it sounds more formal or less everyday:

• Беспроводной микрофон находится на столе = The wireless microphone is located on the table.

Russian often chooses the verb based on the object's physical position:

• лежит = lying, resting horizontally
• стоит = standing upright
• висит = hanging

So if the microphone is resting flat on the table, лежит makes sense.

If it were upright on a stand, Russian might use стоит instead:

• Микрофон стоит на столе.

English usually just says is on the table, but Russian often makes this distinction.

Because на столе expresses location, not movement.

After на, Russian uses:

• prepositional case for location: on the table
• accusative case for motion toward a surface: onto the table

So:

• лежит на столе = is lying on the table
• положил на стол = put onto the table

This is a very important Russian pattern.

Столе is the prepositional singular form of стол.

The base noun is:

• стол = table

After на when it means location, it becomes:

• на столе = on the table

So this is a standard use of the prepositional case.

Russian has no articles. There is no direct equivalent of English a/an or the.

So Беспроводной микрофон лежит на столе could mean:

• A wireless microphone is lying on the table
• The wireless microphone is lying on the table

The exact meaning depends on context.

Yes. Russian word order is more flexible than English because the cases show the grammatical roles.

The basic neutral order here is:

• Беспроводной микрофон лежит на столе.

But you could also say:

• На столе лежит беспроводной микрофон.

That version often puts more focus on where it is, or introduces the microphone as something present on the table.

So both are grammatical, but the emphasis changes.

Usually it describes a state/location: the microphone is in that position.

In English, depending on context, you might translate it as:

• is lying on the table
• lies on the table
• simply is on the table

So although the verb is present tense, it often functions more like a description of where something is than a dramatic ongoing action.

No. The verb лежит already carries the meaning needed here.

Also, in Russian, the present-tense form of to be is normally not used in simple sentences like:

• Это микрофон. = This is a microphone.
• Микрофон на столе. = The microphone is on the table.

In your sentence, there is already a full verb:

• лежит = lies / is lying

So no extra is is needed.

The stress is:

• беспроводно́й
• микрофо́н
• лежи́т
• на столе́

A rough English-style approximation would be:

bys-pra-va-DNOY mee-kra-FON lye-ZHEET na sta-LYE

The stress matters a lot in Russian, so it is worth learning each word with its stressed syllable.

In standard modern Russian, беспроводной is the normal word for wireless.

So:

• беспроводной микрофон = wireless microphone

That is the form you should use.