---
product_id: 114095954
title: "TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black)"
brand: "tunai"
price: "€ 0.72"
currency: EUR
in_stock: false
url: https://www.desertcart.es/products/114095954-tunai-firefly-bluetooth-receiver-worlds-smallest-wireless-audio-bluetooth-4
store_origin: ES
region: Spain
---

# AAC/MP3 support 8 device memory Bluetooth 4.2 TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black)

**Brand:** tunai
**Price:** € 0.72
**Availability:** ❌ Out of Stock

## Summary

> 🎉 Elevate Your Audio Game with the TUNAI Firefly!

## Quick Answers

- **What is this?** TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) by tunai
- **How much does it cost?** € 0.72 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/114095954-tunai-firefly-bluetooth-receiver-worlds-smallest-wireless-audio-bluetooth-4)

## Best For

- tunai enthusiasts

## Why This Product

- Trusted tunai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Share the Vibe:** Connect multiple devices simultaneously for a shared music experience.
- • **No Charging Hassles:** Auto on feature means no need for constant charging.
- • **Transform Your Sound:** Easily convert any audio system into a Bluetooth powerhouse.
- • **Seamless Connectivity:** Remembers up to 8 paired devices for instant connection.
- • **Sleek & Compact Design:** Stylish aesthetics that blend seamlessly into your home or car.

## Overview

The TUNAI Firefly Bluetooth Receiver is the world's smallest wireless audio adapter, designed to transform your car or home stereo into a Bluetooth-enabled sound system. With Bluetooth 4.2 technology, it supports AAC/MP3 audio compression and features innovative sound revitalization technology (SRT). It remembers up to 8 paired devices and allows multiple connections, all while maintaining a sleek and compact design.

## Description

Product description               MEET FIREFLYNever worry about your audio system's Bluetooth status again. This nifty little Bluetooth receiver can upgrade your home or car audio system to wireless so you can easily connect and stream music from your smartphone or tablet.Perfection without compromiseAt just 10g (0.35oz), Firefly is the world's tiniest receiver that also provides high quality music streaming. It uses advanced audio compression technology that guarantees a smooth, authentic sound; using AAC/MP3 decompression support and patent pending "Sound Revitalization Technology" (SRT). Firefly also has aluminum anodized casing, pure copper cable and gold-plated connectors.Works out of the box!With a buttonless design, connection is quick and simple. Just plug Firefly to your audio system, switch on Bluetooth on your device, and pair. Once paired, Firefly will remember you and auto-connect whenever you're close by. The LED light on the USB end will glow like a firefly to indicate connection status. For extra convenience, Firefly can remember up to 8 paired devices and the party mode even allows two simultaneous connections, for easy switching between devices.Specs Bluetooth version: 4.0 (backward compatible) Supported Bluetooth profiles: All devices with compatible Bluetooth A2DP v1.2, SPP Supported formats: AAC, MP3 and SBC decoder  Distance: Max. 10m / 33ft (without interference)What's In the Box[Car Pack] Firefly Bluetooth receiver, dual USB car adapter (color and design may vary), 3.5mm AUX extension cord (60cm / 23.6")[Home Pack] Firefly Bluetooth receiver, AUX to AV/RCA convert cable (1m / 39.4")[Premium Pack] Firefly Bluetooth receiver, 3.5mm AUX extension cord (60cm / 23.6"), AUX to AV/RCA convert cable (1m / 39.4")NOTE: In addition to the provided manual, for troubleshooting, check out the "tunai-creative" FAQ page.                  Safety Warning               Use only 5V to supply the product. Over supply in voltage may damage the product and result the warranty to expire.

## Features

- Transforms your home or car audio systems into Bluetooth compatible speakers with just one plug
- Preserves authentic sound quality with AAC/MP3 audio compression and patent pending "sound revitalization technology" (SRT)
- Remembers up to 8 paired devices, allowing you to connect as soon as Bluetooth is switched on
- Connects to multiple devices at the same time so you can have fun sharing your music
- Keeps your audio system looking sleek with its compact and stylish design (USB charger not included)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01HDO66NK |
| Best Sellers Rank | #68 in Bluetooth Car Kits |
| Customer Reviews | 4.3 4.3 out of 5 stars (6,138) |
| Date First Available | July 27, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.388 ounces |
| Item model number | TF002C-SC-1A |
| Manufacturer | TUNAI CREATIVE INC. |
| Product Dimensions | 0.51 x 6.3 x 0.2 inches |

## Product Details

- **Special feature:** AAC/MP3 decompression support, Patent pending "Sound Revitalization Technology" embedded
- **Brand:** TUNAI
- **Connectivity technology:** Auxiliary, Bluetooth
- **Power source:** DC (USB)
- **Material:** Aluminium

## Images

![TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) - Image 1](https://m.media-amazon.com/images/I/61Oy-i96BZL.jpg)
![TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) - Image 2](https://m.media-amazon.com/images/I/61+5XcF3dGL.jpg)
![TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) - Image 3](https://m.media-amazon.com/images/I/71VGzaSlLVL.jpg)
![TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) - Image 4](https://m.media-amazon.com/images/I/71d6-Amm8wL.jpg)
![TUNAI Firefly Bluetooth Receiver: World's Smallest Wireless Audio Bluetooth 4.2 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Black) - Image 5](https://m.media-amazon.com/images/I/71S6w0idnXL.jpg)

## Questions & Answers

**Q: Will the device turn off automatically if BT is paired but no audio is playing? I have another that shuts off after 5 min, even when paired.**
A: No, which makes this device slightly inconvenient for cars with power ports that stay on even when the car is off (like my 2010 Audi A3) since it won’t automatically reconnect in that case.  However I found a workaround by installing one of these switches on the power line.  I hide the switch under the console and just switch it on and the Tunai will automatically reconnect.  

JBtek Male to Female USB Cable with ON/OFF Switch - Easy Start/Reboot for Raspberry Pi & Arduino https://www.amazon.com/dp/B00UR321B6/ref=cm_sw_r_cp_tai_pQgLBb9GCQ51Q

**Q: Can this be used to connect the entertainment unit (movies and /or music) in the airplane to a set of bluetooth wireless headphones**
A: Interesting thought, but no. Regardless of what regulations may or may not say, this device is a Bluetooth RECEIVER only, much like output-only headphones (without a mic) are. What you would need is a Bluetooth TRANSMITTER or TRANSCEIVER to send the data to your headphones.

**Q: My car has bluetooth for phone so will this be a problem? when i get in car and auto connect to both will calls still work with my cars hands free?**
A: The beauty of this product is that will not interfere at all with your cars Bluetooth phone connection. It will just do audio. Every other product I tried interfered with phone calling because they were all designed to do both. This device is perfect for the older car with Bluetooth phone and an audio Jack input for music

**Q: Hi, is it normal that I hear a hard noice, kind of like unplugging aux cable noise, each time switching between apps or unlocking the phone?**
A: Thanks for the great question. That is not normal. Are you able to try the Firefly with another phone to see if the issue is also present? Please write to us so we can help you more directly: care@truetosource.co. 

Looking forward to hearing from you. 

TrueToSource Customer Care

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-23*