---
product_id: 283835474
title: "Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black)"
brand: "retekess"
price: "€ 55.17"
currency: EUR
in_stock: true
reviews_count: 5
category: "Retekess"
url: https://www.desertcart.gr/products/283835474-retekess-tr503-wireless-fm-microphone-headset-hands-free-with-rechargeable
store_origin: GR
region: Greece
---

# 15 volume levels 30m range 8h battery life Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black)

**Brand:** retekess
**Price:** € 55.17
**Availability:** ✅ In Stock

## Summary

> 🎤 Elevate Your Sound Game!

## Quick Answers

- **What is this?** Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) by retekess
- **How much does it cost?** € 55.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/283835474-retekess-tr503-wireless-fm-microphone-headset-hands-free-with-rechargeable)

## Best For

- retekess enthusiasts

## Why This Product

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

## Key Features

- • **Unleash Your Voice:** Experience a 30m transmission range that keeps you connected, even in large spaces.
- • **Lightweight & Comfortable:** At just 50g, this headset is designed for all-day wear without the bulk.
- • **Power Up Your Performance:** Enjoy up to 8 hours of uninterrupted audio with a quick 2-3 hour charge.
- • **Simplicity Meets Functionality:** Easily pair with any FM-supported device for seamless audio delivery.
- • **Durable Design for Every Occasion:** Crafted with an ABS body, this mic withstands the rigors of daily use while delivering crystal-clear sound.

## Overview

The Retekess Wireless Microphone Headset FM Transmitter is a versatile audio solution designed for professionals. With a long transmission distance of 30 meters, high sensitivity microphone, and a built-in rechargeable battery offering up to 8 hours of use, this lightweight headset is perfect for various applications including teaching, conferences, and karaoke. Its user-friendly design allows for easy pairing with FM-supported devices, making it an essential tool for effective communication.

## Description

More convenient for your businessCurved line, according to ergonomic design; Rounded, more comfortable to wear; Noise reduction microphone, sound effect is goodWidely UseWidely used: teaching, tour guide, sales promotion, lectures, meetings, karaoke, fans singing Salesman, Teacher, Host, Speaker, Conference and Karaoke and so on purposeExpandable & DIY1 transmitter can pair up to Countless receivers. If you have more than one Tour guide or speech area you would like to add, just DIY and fulfill your needsNote You can use any FM radio or FM speaker to receive the signalsFeatures:Amplify what you say without any annoying cableDigital tube display, the transmit frequency adjustable from 87MHz to 108MHzThe transmission distance of 30 meters in the open airYou can use any FM radio or FM speaker to receive the signals15 levels of transmit volume adjustableBuilt-in rechargeable lithium battery, about 8 hours of continuous useLight weight and easy to carry, amplifying your voice anytime and anywhereWidely used: teaching, tour guide, sales promotion, lectures, meetings, karaoke, fans singing and so on purposeSpecificationTransmit power: ≤10mWPower supply: built-in 450mAh lithium batteryCharging time: 2-3 hoursWorking time: about 8 hoursWeight: 50gPackage Includes1 x Microphone

Review: I’m a guide in a sprinter van with 14 guests. This works great! Simple, travels well! Just charge it each night to assure I don’t run out of power!
Review: This functional and affordable piece is a life saver for working as an Interpreter. I pair it to multiple transmiters and it allows me to convey the message being sent to different parties, yet, staying at a comfortable distance without having to be loud. I love it!

## Features

- Long transmission distance; The transmission distance of 30m(98ft) in the open air; Easy to use for school; speech; training; conference etc
- Sensitive microphone; 15 levels of transmit volume adjustable; only a portable headset FM transmitter; cannot connect to the device via Bluetooth
- Built-in lithium battery; The TR503 FM transmitter built-in 450mAh lithium battery
- show frequency; simply pair the FM microphone to the speaker with the same frequency and you are ready to go
- Lightweight and easy to wear; The TR503 FM transmitter only 50g; easy to wear and operate
- Fast charging; type-c charging jack; charging time for 2-3h working time for about 8h; using for long time after charging fully
- FM condenser microphone headset; for easily pairs to all kinds of FM supported devices such as speakers; megaphones; amplifiers; FM radio and car audio systems
- Widely used; teaching; tour guide; lectures; meetings; karaoke; fans singing and so on purpose; easily pairs to all kinds of FM supported devices such as speakers; amplifiers; FM radio and car audio systems
- TR503 FM headset mic comes with an ABS body; smooth touch and stable structure, strong and durable
- The microphone has clear sound quality which maintains the original sound

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07D5TVTT6 |
| Antenna Location | Conference |
| Audible Noise | 60 Decibels |
| Brand | Retekess |
| Built-In Media | Built-In Mic |
| Color | Black |
| Compatible Devices | Amplifier, Headphone |
| Connectivity Technology | FM |
| Connector Type | Wireless |
| Customer Reviews | 4.3 4.3 out of 5 stars (101) |
| Enclosure Material | Acrylonitrile Butadiene Styrene |
| Frequency Range | 87 mhz 108 mhz |
| Frequency Response | 15 KHz |
| Hardware Platform | Karaoke Machine |
| Item Dimensions | 20 x 15 x 3 centimeters |
| Item Weight | 50 Grams |
| Manufacturer | Retekess |
| Mfr Part Number | FY4430A |
| Microphone Form Factor | Headset |
| Model Name | TR503 |
| Model Number | FY4430A |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Number of Channels | 1 |
| Polar Pattern | Unidirectional |
| Power Source | Battery Powered |
| Signal-to-Noise Ratio | 60 dB |
| Special Feature | Bluetooth, Lightweight, Rechargeable, Wireless |
| UPC | 609378746666 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Retekess
- **Connectivity technology:** FM
- **Connector type:** Wireless
- **Model name:** TR503
- **Recommended uses for product:** Conference

## Images

![Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) - Image 1](https://m.media-amazon.com/images/I/51zLNrRKd7L.jpg)
![Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) - Image 2](https://m.media-amazon.com/images/I/61VxZM0OoAL.jpg)
![Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) - Image 3](https://m.media-amazon.com/images/I/61HdKNFAw7L.jpg)
![Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) - Image 4](https://m.media-amazon.com/images/I/61n7MxvR2IL.jpg)
![Retekess TR503 Wireless FM Microphone Headset, Hands-Free with Rechargeable Battery for Voice Amplifier, Church, Tour Guide, Teacher, Salesman, Conference, Karaoke (Black) - Image 5](https://m.media-amazon.com/images/I/511QF0Grr5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***N on 29 December 2025*

I’m a guide in a sprinter van with 14 guests. This works great! Simple, travels well! Just charge it each night to assure I don’t run out of power!

### ⭐⭐⭐⭐⭐ Review
*by B***. on 25 October 2024*

This functional and affordable piece is a life saver for working as an Interpreter. I pair it to multiple transmiters and it allows me to convey the message being sent to different parties, yet, staying at a comfortable distance without having to be loud. I love it!

### ⭐⭐⭐⭐ Review
*by C***D on 28 October 2024*

It took a second for me too figure it out, but then when I figured it out, it works perfect. It’s a really good product I suggest this product 👍

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---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-04-26*