---
product_id: 544175754
title: "TUNAI Firefly Bluetooth Receiver: World’s Smallest Wireless Audio Bluetooth 5.0 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Grey)"
brand: "tunai"
price: "€ 1.58"
currency: EUR
in_stock: false
url: https://www.desertcart.at/products/544175754-tunai-firefly-bluetooth-receiver-world-s-smallest-wireless-audio-bluetooth
store_origin: AT
region: Austria
---

# Auto On Compact Design Bluetooth 5.0 TUNAI Firefly Bluetooth Receiver: World’s Smallest Wireless Audio Bluetooth 5.0 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Grey)

**Brand:** tunai
**Price:** € 1.58
**Availability:** ❌ Out of Stock

## Summary

> 🎉 Elevate Your Sound Game with Firefly!

## Quick Answers

- **What is this?** TUNAI Firefly Bluetooth Receiver: World’s Smallest Wireless Audio Bluetooth 5.0 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Grey) by tunai
- **How much does it cost?** € 1.58 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/544175754-tunai-firefly-bluetooth-receiver-world-s-smallest-wireless-audio-bluetooth)

## 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

- • **No Charging Needed:** Power on automatically with your engine or speaker activation.
- • **Space-Saving Design:** Sleek and compact, perfect for any car or home setup.
- • **Noise-Free Listening:** Built-in ground loop isolator eliminates unwanted noise for pure sound.
- • **Seamless Connectivity:** Enjoy instant reconnection without the hassle of manual pairing.
- • **Transform Your Audio Experience:** Easily convert any stereo system into a Bluetooth powerhouse.

## Overview

The TUNAI Firefly Bluetooth Receiver is the world's smallest wireless audio adapter, designed to effortlessly transform your car and home stereo systems into Bluetooth-enabled speakers. With Bluetooth 5.0 technology, it offers seamless auto-reconnection, a built-in ground loop isolator for noise-free listening, and a compact design that fits perfectly in any space. Plus, it powers on automatically, eliminating the need for charging.

## Description

Buy TUNAI Firefly Bluetooth Receiver: World’s Smallest Wireless Audio Bluetooth 5.0 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Grey): Bluetooth Car Kits - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Wireless Transformation Made Easy : Turn your home stereo and car audio systems into Bluetooth-enabled speakers with a simple plug. No charging required! FIREFLY powers on automatically with your engine or speaker activation.
- Seamless Auto-Reconnection : Say farewell to manual pairing. FIREFLY instantly connects when Bluetooth is activated, automatically linking to the last device used.
- Silence Ground Loop Noise : FIREFLY comes with a built-in ground loop isolator, ensuring no more hissing or humming sounds. Active this feature through the pin included for uninterrupted music enjoyment.
- Sleek and Compact : Maintain a stylish and space-saving audio setup with FIREFLY's convenient compact design. (USB charger not included)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BYSSCQKT |
| Additional Features | World’s Smallest Wireless Audio, Built-in Ground Loop Isolator |
| Audio Input | 3.5 mm audio jack |
| Audio Output Mode | Stereo |
| Audio Output Type | auxiliary |
| Best Sellers Rank | #183 in Bluetooth Car Kits |
| Brand | TUNAI |
| Color | Grey |
| Compatibility Options | Bluetooth A2DP-enabled devices |
| Compatible Devices | Bluetooth A2DP-enabled devices |
| Connectivity Technology | 3.5 mm AUX |
| Connector Type Used on Cable | Auxiliary |
| Control Method | Touch |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,273) |
| Hardware Interface | Bluetooth |
| Human Interface Input | Buttons |
| Installation Type | Plug In |
| Item Dimensions L x W x H | 6.3"L x 0.5"W x 0.2"H |
| Item Weight | 0.06 kg |
| Manufacturer | TUNAI |
| Model Name | HULK-03 |
| Number of Channels | 2 |
| Power Source | Corded Electric |
| Supported Application | Bluetooth A2DP |
| Supported Media Type | MP3 |
| Supported Standards | Bluetooth A2DP |
| Warranty Description | 1 Year Warranty |
| Wireless Compability | Bluetooth |

## Product Details

- **Brand:** TUNAI
- **Connectivity Technology:** 3.5 mm AUX
- **Power Source:** Corded Electric
- **Product Dimensions:** 6.3"L x 0.5"W x 0.2"H
- **Special Feature:** World’s Smallest Wireless Audio, Built-in Ground Loop Isolator

## Images

![TUNAI Firefly Bluetooth Receiver: World’s Smallest Wireless Audio Bluetooth 5.0 Adapter with 3.5mm AUX for Car/Home Stereo Music Streaming; Auto On, No Charging Needed - Car Kit (Grey) - Image 1](https://m.media-amazon.com/images/I/51vz6NIqcVL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.at/products/544175754-tunai-firefly-bluetooth-receiver-world-s-smallest-wireless-audio-bluetooth](https://www.desertcart.at/products/544175754-tunai-firefly-bluetooth-receiver-world-s-smallest-wireless-audio-bluetooth)

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-08-25*