---
product_id: 216147182
title: "BLX14/SM31 Wireless Microphone System for Fitness and Aerobics - 14-Hour Battery Life, 300 ft Range | Includes SM31FH Fitness Headset Mic, Single Channel Receiver | J11 Band (BLX14/SM31-J11)"
brand: "shure"
price: "€ 830.76"
currency: EUR
in_stock: true
reviews_count: 13
category: "Shure"
url: https://www.desertcart.sk/products/216147182-blx14-sm31-wireless-microphone-system-for-fitness-and-aerobics-14
store_origin: SK
region: Slovakia
---

# Professional Shure sound 300 ft wireless range 14-hour battery life BLX14/SM31 Wireless Microphone System for Fitness and Aerobics - 14-Hour Battery Life, 300 ft Range | Includes SM31FH Fitness Headset Mic, Single Channel Receiver | J11 Band (BLX14/SM31-J11)

**Brand:** shure
**Price:** € 830.76
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your fitness sound game—wireless, powerful, and built to perform.

## Quick Answers

- **What is this?** BLX14/SM31 Wireless Microphone System for Fitness and Aerobics - 14-Hour Battery Life, 300 ft Range | Includes SM31FH Fitness Headset Mic, Single Channel Receiver | J11 Band (BLX14/SM31-J11) by shure
- **How much does it cost?** € 830.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/216147182-blx14-sm31-wireless-microphone-system-for-fitness-and-aerobics-14)

## Best For

- shure enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Pro Setup:** Intuitive interface and quick setup get you live in minutes—no tech headaches, just flawless sound.
- • **Unleash Your Movement:** Wireless freedom with a 300 ft range lets you own the stage and the crowd without limits.
- • **Expand Your Soundscape:** Supports up to 12 channels per frequency band—perfect for growing your event or team without compromise.
- • **Endurance That Keeps Up:** 14 hours of continuous power on simple AA batteries means your performance never quits.
- • **Tailored for Fitness Pros:** SM31FH headset mic designed for comfort and sweat resistance during intense workouts or performances.

## Overview

The Shure BLX14/SM31 Wireless Microphone System delivers professional-grade audio with a robust 300 ft wireless range and an impressive 14-hour battery life powered by easy-to-replace AA batteries. Designed specifically for fitness and aerobics, it includes the comfortable SM31FH headset mic and a single-channel receiver with user-friendly controls. Engineered for durability and quick setup, this system supports up to 12 channels per frequency band, making it ideal for small venues and active professionals seeking reliable, high-quality wireless sound.

## Description

WIRELESS FREEDOM, MADE SIMPLE. The ideal entry-level wireless microphone system for small venues. BLX Wireless Systems provide professional-quality sound with simple setup and an intuitive interface. Choose from a wide range of transmitter form factors (handheld, bodypack, headworn, lavalier, instrument clip-on) and use it with single- and dual-channel, as well as rack-mounted receivers.

Review: Amazing Sound! - This device sounds as good, if not better, than any of my stationary Audio-Technica or other Shure mics. Battery life isn't anything game-changing, but I did 2 gigs (about 6 hours) on a single battery, so that's not bad, and they're simple AA batteries, so cheap to get/replace. I haven't tested how far the range is, since I'm typically pretty close to the receiver, but I've never experienced even the slightest latency or sound-fidelity loss in distancing myself from the receiver. The headset is comfortable and has no issues with my rather clammy head after several hours of performing. Great product!
Review: Excellent product - Works great and for it purpose

## Features

- WIRELESS FREQUENCY BAND SELECTION - Before purchasing, please ensure that the wireless frequency band you select works in your area (refer to Shure website for details > search Shure Wireless Frequency Finder).
- SUPERIOR AUDIO - Get the show going with no strings attached. Professional Shure sound for every band and any vocal need.
- EXTEND THE STAGE - The system operates up to a range of 300 feet (100m), so you can take the show into the crowd without interruption.
- QUICK & EASY SETUP - A breeze to setup and operate, BLX will have you up and running in record time.
- BATTERY LIFE - BLX transmitters get up to 14 hours of power from a single pair of AA batteries, so the show can go on and on (and on).
- SYSTEM EXPANSION - Run up to 12 Channels per Frequency Band. AKA: you'll probably need to find a bigger stage before you run out of channels.
- WHAT'S IN THE BOX - BLX4 single-channel receiver, power supply, BLX1 wireless bodypack transmitter, belt clip, SM31FH fitness headset condenser mic, clothing clip, windscreen, 2x AA batteries, and user guide. Free 2-YEAR WARRANTY included.
- USER-FRIENDLY INTERFACE: The system features a user-friendly interface with easy-to-use controls, allowing users to adjust settings and manage the system with ease.
- BUILT-IN VERSATILITY - An impressive variety of Shure microphones are available in BLX systems, so you can find the sound that works for you.
- TRUSTED QUALITY - Engineered by Shure with the durability that set the world standard, it’s sure to keep turning up at legendary performances.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B085WGPDCY |
| Batteries | 2 AA batteries required. (included) |
| Battery type | Alkaline |
| Best Sellers Rank | #5,584 in Musical Instruments ( See Top 100 in Musical Instruments ) #89 in Handheld Wireless Microphones & Systems |
| Customer Reviews | 4.6 4.6 out of 5 stars (480) |
| Date First Available | April 1, 2020 |
| Frequency Response | 20 KHz |
| Item Weight | 2.8 pounds |
| Item dimensions L x W x H | 13.5 x 12 x 4 inches |
| Item model number | BLX14/SM31-J11 |
| Manufacturer | Shure |
| Material | Metal |
| Material Type | Metal |
| Microphone Form Factor | Microphone System |
| Number of Batteries | 2 AA batteries required. (included) |
| Number of Channels | 1 |
| Power Source | Corded Electric,Battery Powered |
| Product Dimensions | 13.5 x 12 x 4 inches |
| Signal-to-Noise Ratio | 65 dB |
| Size | SM31 |
| UPC | 042406555340 |

## Product Details

- **Brand:** Shure
- **Compatible Devices:** Headphone
- **Connectivity Technology:** XLR
- **Connector Type:** XLR
- **Item Weight:** 2.8 Pounds
- **Model Name:** BLX14/SM31
- **Polar Pattern:** Unidirectional
- **Recommended Uses For Product:** Speech
- **Special Feature:** Clip

## Images

![BLX14/SM31 Wireless Microphone System for Fitness and Aerobics - 14-Hour Battery Life, 300 ft Range | Includes SM31FH Fitness Headset Mic, Single Channel Receiver | J11 Band (BLX14/SM31-J11) - Image 1](https://m.media-amazon.com/images/I/51b6wzYkMiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing Sound!
*by A***H on July 14, 2021*

This device sounds as good, if not better, than any of my stationary Audio-Technica or other Shure mics. Battery life isn't anything game-changing, but I did 2 gigs (about 6 hours) on a single battery, so that's not bad, and they're simple AA batteries, so cheap to get/replace. I haven't tested how far the range is, since I'm typically pretty close to the receiver, but I've never experienced even the slightest latency or sound-fidelity loss in distancing myself from the receiver. The headset is comfortable and has no issues with my rather clammy head after several hours of performing. Great product!

### ⭐⭐⭐⭐⭐ Excellent product
*by F***S on June 13, 2025*

Works great and for it purpose

### ⭐⭐⭐⭐⭐ Perfect for PE teacher!
*by S***A on September 24, 2023*

I’m a PE teacher and this headset is amazing! I’m able to project my voice in a large gym with a big echo and kids can hear me fine without me having to raise my voice and I’m able to run and play the activity of the day without ever having static or disruption. Best to hook the receiver to a good quality speaker!! But I’m very happy. I use rechargeable batteries for it. I teach all day, everyday and the batteries last a week. Just have a set pre-charged and you’re good to go.

## Frequently Bought Together

- Shure BLX14/SM31 Wireless Microphone System for Fitness and Aerobics - 14-Hour Battery Life, 300 ft Range | Includes SM31FH Fitness Headset Mic, Single Channel Receiver | J11 Band (BLX14/SM31-J11)
- Tune Belt Mic Belt - Microphone Holder Pack - The Original Brand - Carrier Pouch Securely Holds and Protects for Fitness Instructors, Theater, Speakers and more
- 15 Pack Foam Microphone Windscreen, Lapel Headset Microphone Sponge Mini Foam Cover Shield Protection for Variety of Headset Microphone(Black)

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**Shop now:** [https://www.desertcart.sk/products/216147182-blx14-sm31-wireless-microphone-system-for-fitness-and-aerobics-14](https://www.desertcart.sk/products/216147182-blx14-sm31-wireless-microphone-system-for-fitness-and-aerobics-14)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-01*