---
product_id: 631296738
title: "Kastwave Bluetooth 5.3 Aux Adapter For Car, 3.5Mm Auxiliary Wireless Audio Receiver, Receiver Car Music/Hands-Free Calling, 12H Battery Life, Car/Home Stereo (1 Pcs)"
brand: "kastwave"
price: "€ 10.54"
currency: EUR
in_stock: true
reviews_count: 1
category: "Kastwave"
url: https://www.desertcart.ie/products/631296738-kastwave-bluetooth-5-3-aux-adapter-for-car-3-5mm
store_origin: IE
region: Ireland
---

# Bluetooth 5.3 for crisp wireless sound 33ft wireless range for freedom 12H battery life with rapid 2H charging Kastwave Bluetooth 5.3 Aux Adapter For Car, 3.5Mm Auxiliary Wireless Audio Receiver, Receiver Car Music/Hands-Free Calling, 12H Battery Life, Car/Home Stereo (1 Pcs)

**Brand:** kastwave
**Price:** € 10.54
**Availability:** ✅ In Stock

## Summary

> 🎧 Upgrade your ride & vibe wirelessly—because your sound deserves the future.

## Quick Answers

- **What is this?** Kastwave Bluetooth 5.3 Aux Adapter For Car, 3.5Mm Auxiliary Wireless Audio Receiver, Receiver Car Music/Hands-Free Calling, 12H Battery Life, Car/Home Stereo (1 Pcs) by kastwave
- **How much does it cost?** € 10.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/631296738-kastwave-bluetooth-5-3-aux-adapter-for-car-3-5mm)

## Best For

- kastwave enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Battery Power:** Enjoy up to 12 hours of continuous playback with fast 2-hour recharge—never miss a beat on your commute or at home.
- • **True Wireless Stereo Ready:** Pair two adapters to unlock immersive left-right channel sound and elevate your audio game—party mode activated.
- • **Effortless One-Button Operation:** Quick power on and instant pairing means no fumbling—just pure, uninterrupted music and calls.
- • **Hands-Free Calling & Voice Control:** Built-in mic and dedicated call button keep you connected and safe with Siri and navigation voice commands.
- • **Seamless Bluetooth 5.3 Connectivity:** Experience ultra-stable, low-latency wireless streaming that modernizes any car or home stereo setup.

## Overview

The Kastwave Bluetooth 5.3 Aux Adapter transforms any 3.5mm audio input into a wireless powerhouse, delivering stable Bluetooth 5.3 connectivity, hands-free calling, and up to 12 hours of battery life. Compact and portable, it supports True Wireless Stereo pairing for immersive sound, making it the perfect upgrade for car and home stereo systems seeking modern convenience and quality audio.

## Description

Bluetooth 5.3 AUX Adapter for Car, 3.5mm Auxiliary Wireless Audio Receiver, Bluetooth Receiver for Car Music/Hands-Free Calling, 12H Battery Life, for Car/Home Stereo (1 Pcs)★★★Why choose us?★★★✅ - Mini Size & Portable: This Bluetooth audio adapter is smaller and more portable. Working range up to 33ft, not limited by wires. Support Devices: Home stereo, speakers, headphones, earbuds, audio music streaming , car stereo system, PC, etc.★★★Specifications★★★Color: Gray-Black★★★What you will get★★★1 * Bluetooth Car AUX Adapter★★★Note★★★- Manual measurement, please allow slight errors on size.- The colors may exist slight difference due to different screens.

Review: TWS fails 90% of the time - Tws is really bad because it fails most of the time and you have to do it everytime the device turn off, so i have an elaborate speaker setup at home where i have two amazing analog sound systems i want them to work together so i had one bluetooth receiver then used wires and small amp to distripute sound to both aux inputs on both systems, so these javing tws function seems to have solved the problem, yet everytime i turn on my tv or try to connect my phone i have to turn borh devices on then pair them together first which fails 90% of the time then connect my tv or phone, so since they fail to pair together there is no tws function which is thier selling point as even cheaper blutooth devices are better than them that has no tws

## Features

- 🎵 - 【True Wireless Stereo Functionality】Enhance your audio experience by pairing two of these Bluetooth receivers to create a True Wireless Stereo system, transforming separate speakers into left and right audio channels for immersive, booming stereo sound. Ideal for elevating parties and music experiences.
- 🎵 - 【Bluetooth 5.3 Connectivity】Upgrade your old or vintage audio equipment with this Bluetooth aux receiver, enabling wireless music streaming and hands-free calls in vehicles or with wired speakers, amplifiers, or stereo systems, thereby modernizing your audio setup.
- 🎵 - 【Simple Operation & Quick Pairing】Easy one-button activation for power and pairing, leveraging Bluetooth 5.3 for a faster, more stable connection, ensuring seamless audio playback and enhancing user convenience with its straightforward interface.
- 🎵 - 【Enhanced Hands-free Features】Equipped with an in-built microphone and dedicated button for managing calls, this receiver also supports voice-guided navigation and Siri activation, facilitating safer driving by minimizing distractions.
- 🎵 - 【Efficient Battery Performance】Offers long-lasting playtime, supporting up to 12 hours of continuous use on a full charge, coupled with a rapid charging feature that reaches full battery capacity in just 2 hours, ensuring your device is ready whenever you need it.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CX92J89R |
| Best Sellers Rank | #33,228 in Electronics ( See Top 100 in Electronics ) #38 in Bluetooth Car Kits |
| Item model number | [KASTWAVE_MODEL_NUMBER] |
| Manufacturer | KASTWAVE |
| Package Dimensions | 10 x 8 x 2 cm; 40 g |

## Product Details

- **Brand:** KASTWAVE
- **Connectivity technology:** Bluetooth
- **Item weight:** 0.04 Kilograms
- **Power source:** Battery Powered
- **Special features:** Built-In Microphone, Hands-Free Calls

## Images

![Kastwave Bluetooth 5.3 Aux Adapter For Car, 3.5Mm Auxiliary Wireless Audio Receiver, Receiver Car Music/Hands-Free Calling, 12H Battery Life, Car/Home Stereo (1 Pcs) - Image 1](https://m.media-amazon.com/images/I/51mTs6M-gbL.jpg)

## Customer Reviews

### ⭐ TWS fails 90% of the time
*by H***. on 22 February 2025*

Tws is really bad because it fails most of the time and you have to do it everytime the device turn off, so i have an elaborate speaker setup at home where i have two amazing analog sound systems i want them to work together so i had one bluetooth receiver then used wires and small amp to distripute sound to both aux inputs on both systems, so these javing tws function seems to have solved the problem, yet everytime i turn on my tv or try to connect my phone i have to turn borh devices on then pair them together first which fails 90% of the time then connect my tv or phone, so since they fail to pair together there is no tws function which is thier selling point as even cheaper blutooth devices are better than them that has no tws

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**Shop now:** [https://www.desertcart.ie/products/631296738-kastwave-bluetooth-5-3-aux-adapter-for-car-3-5mm](https://www.desertcart.ie/products/631296738-kastwave-bluetooth-5-3-aux-adapter-for-car-3-5mm)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-26*