# FM transmitter Retoo Bluetooth 5.0 USB multifunction car adapter 8-in-1

**URL:** https://aio.lv/en/product--retoo-5904806162311--12364407
**Data updated:** 2026-04-26 18:53 (EEST)
**Category:** FM Transmitters
**Manufacturer:** Retoo
**Manufacturer code:** 5904806162311
**EAN:** 5904806162311
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 11.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--retoo-5904806162311--12364407

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Retoo multifunction FM transmitter with Bluetooth 5.0 and USB connectivity, marketed as an 8-in-1 car adapter. Provides wireless audio streaming from smartphones via Bluetooth, FM broadcasting to the vehicle radio, and USB charging/connection. Designed for hands-free calls, music playback, and in-car charging, suitable for vehicles without modern infotainment systems.

## Long description

The Retoo Bluetooth 5.0 USB multifunction car adapter is an 8-in-1 FM transmitter designed to add wireless audio streaming, hands-free calling and USB charging to vehicles that lack modern infotainment systems. The device connects to a smartphone via Bluetooth 5.0 and rebroadcasts audio over an FM frequency so it can be heard through the car radio. It also provides at least one USB port for charging and media playback, a built-in microphone for phone calls, and various playback controls accessible on the adapter.
Advantages
This Retoo FM transmitter offers Bluetooth 5.0 connectivity for lower-latency and more stable audio streaming compared with older Bluetooth versions. It integrates FM broadcasting for compatibility with most car radios and includes USB power to charge mobile devices while driving. The built-in microphone and call-handling controls enable hands-free calls, and compact design allows installation in the vehicle without obstructing other controls.
Suitable for
Vehicles without Bluetooth-enabled or modern infotainment systems
Drivers who need hands-free calling using their smartphone
Users who want to play music from a phone via Bluetooth through the car radio
Charging mobile devices in the car using a USB port
When it may not be suitable
The transmitter relies on FM rebroadcasting, so audio quality and reception depend on local radio interference and the vehicle radio’s FM tuner sensitivity. In cars with modern Bluetooth or auxiliary/USB audio inputs, a direct wired or built-in Bluetooth connection may provide better audio fidelity and fewer connection issues. The device may also be unsuitable if you require advanced audio features such as digital media metadata display on the car screen or lossless audio transmission.
Key specifications
Bluetooth version: Bluetooth 5.0 for wireless audio and call connectivity
FM transmitter function: rebroadcasts audio to car FM radio
USB connectivity: USB port(s) for charging and media playback
Hands-free calling: built-in microphone and call controls
Design: compact plug-in adapter for vehicle cigarette lighter or 12V socket
How to use
Plug the Retoo adapter into the vehicle’s 12V socket or cigarette lighter. Pair your smartphone with the adapter using Bluetooth 5.0 following the device’s pairing procedure. On the car radio, tune to an unused FM frequency and set the transmitter to the same frequency. Start audio playback or accept calls on the paired phone; audio will play through the car speakers via the FM band and calls will route through the adapter’s microphone. Use the adapter’s onboard buttons to control playback and answer or end calls. Connect a USB cable to charge a mobile device or play media from a USB storage device if supported.
What to consider before purchase
Check that your car has a working FM radio and a 12V socket/cigarette lighter outlet
Consider local FM band congestion which can affect transmission quality
Verify whether USB charging and media playback ports meet your device power and format requirements
Confirm that hands-free call functionality meets your expectations for microphone clarity
Usage recommendations
For best results, choose a clear FM frequency with minimal local radio stations, place the adapter securely to avoid movement while driving, and keep smartphone firmware and Bluetooth drivers up to date. When possible, use a high-quality USB cable for charging to ensure stable power delivery.

## FAQ

### How much does the Retoo FM transmitter Bluetooth 5.0 USB 8-in-1 cost, and is it available for purchase?

The price is 13.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1280 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 16.07.2026 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: 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 Retoo 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 Retoo 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/12364407/68345302_large.webp