---
product_id: 185089127
title: "Monster FLEX Active Noise Canceling Bluetooth Headphones"
brand: "monster"
price: "€ 27.94"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.es/products/185089127-monster-flex-active-noise-canceling-bluetooth-headphones
store_origin: ES
region: Spain
---

# Wired + Wireless Flexibility Active Noise Cancelling 8-Hour Battery Life Monster FLEX Active Noise Canceling Bluetooth Headphones

**Brand:** monster
**Price:** € 27.94
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Flex Your Focus, Anywhere, Anytime

## Quick Answers

- **What is this?** Monster FLEX Active Noise Canceling Bluetooth Headphones by monster
- **How much does it cost?** € 27.94 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/185089127-monster-flex-active-noise-canceling-bluetooth-headphones)

## Best For

- monster enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Power:** Enjoy up to 8 hours of uninterrupted wireless playback—work, travel, or unwind without pause.
- • **Silence the World:** Block out distractions with advanced active noise cancelling for immersive focus.
- • **Plug In When Needed:** Seamlessly switch to wired mode with the included 3.5mm cable—music never stops.
- • **Travel-Ready Design:** Lightweight and comfortable for long commutes or flights, perfect for the busy professional.
- • **Stay Connected Hands-Free:** Built-in speakerphone ensures you never miss important calls on the go.

## Overview

The Monster FLEX headphones combine active noise cancelling with Bluetooth wireless freedom and an 8-hour battery life, plus wired connectivity for uninterrupted music and calls—ideal for professionals who demand focus and flexibility on the move.

## Description

Full description not available

## Features

- The Monster FLEX Active Noise Canceling Bluetooth Headphones are the perfect set for traveling or daily tasks.
- Active noise cancelling lets you enjoy your music or calls without any distractions. Plus, the music doesn't stop when the battery runs out–just use the supplied 3.5mm cable to keep the fun going.
- With an 8-hour playtime and speakerphone, you will not worry about missing any calls.

## Product Details

- **Brand:** Monster
- **Color:** Black
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Noise Control:** Active Noise Cancellation

## Images

![Monster FLEX Active Noise Canceling Bluetooth Headphones - Image 1](https://m.media-amazon.com/images/I/51n01h3FxYL.jpg)
![Monster FLEX Active Noise Canceling Bluetooth Headphones - Image 2](https://m.media-amazon.com/images/I/51nqbjBZZ6L.jpg)
![Monster FLEX Active Noise Canceling Bluetooth Headphones - Image 3](https://m.media-amazon.com/images/I/51n01h3FxYL.jpg)
![Monster FLEX Active Noise Canceling Bluetooth Headphones - Image 4](https://m.media-amazon.com/images/I/51g1no8vo1L.jpg)
![Monster FLEX Active Noise Canceling Bluetooth Headphones - Image 5](https://m.media-amazon.com/images/I/71MOLDvLQmL.jpg)

## Questions & Answers

**Q: Where do the ear pieces go when you're not listening?  Do they hang loose, retract, or clip on somewhere?**
A: They hand but as the two sides are magnetized, the stick together at chest level. Hope this helps.

**Q: How many db do they reduced the noise by**
A: couldn't give you a technical answer, but I use them in the car when on a road trip and my wife is driving and they block out all the road rumble
very good in planes also, can run the volume much lower than with out noise reduction
Would recommend

**Q: Can you watch tv with them**
A: I have listened to my TV with them.

**Q: Does this work on a wifi only tablet?**
A: This should work on either WiFi or Bluetooth.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 'Impressive' first impression
*by A***R on November 10, 2020*

It is very rare for me to give 5 stars to anything, but I am making an exception. I just got this pair of headphones today. They were very well packaged, and I was anxious to try them out. I charged them, took a quick look at the manual, and went for one my walks. I have other wireless earbuds that work ok, but I live right next to a freeway and the noise is problematic. Bluetooth connected automatically quite quickly. I put them on and was surprised at the amount of noise reduction WITHOUT the ANC enabled. Maybe it is just the nice way that fit into my ears. But when I enabled the ANC, it was even better. There was a noticeable reduction in ambient noise. When walking next to the freeway, I could barely hear any traffic noise at all. It was a very pleasant change. About all I could hear was the music I was playing. The sound quality was nice as well. I hope these hold up well because so far I am very pleased. Now, if they suddenly stop connecting, or something changes, I will update my review.

### ⭐⭐⭐⭐⭐ A definite upgrade over my prior earphones
*by Y***Z on February 19, 2020*

Nice. Have been wearing every day at work since purchasing.Impressive out of the box experience. High end premium weight retail box with magnets (!!!) to snap close the lid, cloth bag, useful aux cable, extra earphone tips, glossy user manual, micro usb charging cable.No issues so far with battery life. Infer collar design allows for a bigger, longer lasting battery than tiny battery used for air pods.Sound is very good. No issues at all while listening to Pandora music or watching CNBC videos.Works for me. A definite upgrade over my prior earphones.

### ⭐⭐⭐⭐ Not bad, could be better.
*by J***N on January 9, 2022*

These are pretty average as far as earphones go. Decent sound, the magnets on the buds themselves are pretty cool. The noise cancellation is average. The battery life is about 7 to 8 hours. The only down side to them, is the charging port is temperamental. It only charges well with the cord it comes with. Otherwise worth it for the money.

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**Shop now:** [https://www.desertcart.es/products/185089127-monster-flex-active-noise-canceling-bluetooth-headphones](https://www.desertcart.es/products/185089127-monster-flex-active-noise-canceling-bluetooth-headphones)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-22*