# USB cardioid microphone Tellur FMT-B4 Black — USB connection, cardioid polar pattern

**URL:** https://aio.lv/en/product--tellur-fmt-b4--3056554
**Data updated:** 2025-12-29 10:43 (EET)
**Category:** FM Transmitters
**Manufacturer:** Tellur
**Manufacturer code:** FMT-B4
**EAN:** 5949087929109
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tellur-fmt-b4--3056554

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Tellur FMT-B4 is a USB-connected cardioid microphone in black designed for clear single-source voice capture. With a cardioid polar pattern and plug-and-play USB connection, it suits podcasting, streaming, online meetings and home recordings. The microphone focuses on sound from the front, reduces side and rear noise, and offers simple setup across compatible computers and devices.

## Long description

The Tellur FMT-B4 Bluetooth FM transmitter combines wireless audio streaming, microSD playback and fast charging in a compact car accessory. It connects to a smartphone or tablet via Bluetooth to stream music and also plays tracks directly from a microSD card. The transmitter mounts on a car air vent with a magnetic holder and includes a QC3.0 USB port for fast charging. In addition, it stores the last used FM frequency and last played track, and supports hands-free calls with noise suppression and echo cancellation.
Advantages
The device offers Bluetooth wireless streaming and direct microSD playback in one unit, a magnetic vent mount for convenient positioning, and QC3.0 fast charging for connected devices. It retains the previous FM frequency and track after shutdown to resume playback quickly, and improves call quality with built-in noise suppression and echo cancellation. Compact design and plug-and-play operation make it easy to use in most cars.
Suitable for
In-car music streaming from smartphone or tablet via Bluetooth
Playing preloaded playlists from a microSD card
Hands-free phone calls while driving
Fast charging of phones or tablets using the QC3.0 USB port
Key specifications
Model: Tellur FMT-B4
Connection: Bluetooth and microSD playback
Mount: Magnetic air vent holder
Charging: QC3.0 USB fast charge
Call features: Noise suppression and echo cancellation
Memory: Remembers last FM frequency and last played song
How to use
Place the transmitter on the car air vent using the magnetic holder. Pair a smartphone or tablet via Bluetooth following the device's pairing procedure, or insert a microSD card with audio files to play directly. Tune your car radio to the FM frequency broadcast by the transmitter to listen through the vehicle speakers. Connect a USB cable to the QC3.0 port to fast-charge a device while driving. The unit will restore the last FM frequency and track after power cycles.
Usage recommendations
For best audio and call performance, position the transmitter securely on the vent so the microphone faces the driver, keep the microSD card formatted and use compatible audio file formats. When using QC3.0 charging, use cables and devices that support fast charging to achieve optimal charging speeds.

## FAQ

### How much does the Tellur FMT-B4 USB cardioid microphone cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Tellur products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Tellur service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/3056554/51657300_large.webp