---
product_id: 728082888
title: "CX 300S Black"
brand: "sennheiser"
price: "£94.10"
currency: GBP
in_stock: true
reviews_count: 5
category: "Sennheiser"
url: https://www.desertcart.co.uk/products/728082888-cx-300s-black
store_origin: GB
region: Great Britain
---

# Precision German audio tech 4 ear tip sizes for perfect fit One-button smart remote control CX 300S Black

**Brand:** sennheiser
**Price:** £94.10
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your everyday sound — precision, comfort, control.

## Quick Answers

- **What is this?** CX 300S Black by sennheiser
- **How much does it cost?** £94.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/728082888-cx-300s-black)

## Best For

- sennheiser enthusiasts

## Why This Product

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

## Key Features

- • **Custom Comfort Fit:** Choose from four ear tip sizes (XS, S, M, L) for a secure, personalized fit that blocks out distractions.
- • **Seamless Control On-The-Go:** One-button inline remote lets you play, pause, and take calls without missing a beat or fumbling for your phone.
- • **Noise-Isolating In-Ear Design:** Immerse yourself in your playlist with sound isolation that reduces ambient noise for focused listening.
- • **Universal Wired Compatibility:** Plug and play with any device featuring a 3.5mm jack—no adapters, no hassle.
- • **Crystal-Clear German Engineering:** Experience every note with precision-tuned sound clarity that brings your music to life.

## Overview

The Sennheiser CX 300S Black wired in-ear headphones deliver detailed audio clarity with enhanced bass, thanks to precision German engineering. Featuring four sizes of ear adapters for a personalized fit, an inline smart remote for effortless control, and noise-isolating design, these earbuds are compatible with any device sporting a 3.5mm jack. Lightweight and comfortable, they’re designed for professionals who demand quality sound and convenience on the move.

## Description

Enhance your sound with Sennheiser CX 300S earphones. Sennheiser transducer technology delivers amazingly detailed sound reproduction and enhanced bass response. Available in Small, Medium, Large Smart remote allows you to play/pause music or take calls on all devices

Review: ...
Review: defective - right side barely works after 3 months

## Features

- Note: Earbud tip size does not match the ear canal or headset is not fitted correctly, it may not provide proper sound quality and call performance. Convert your earbud tips to a snug fit for your ears
- Precision engineering in Germany ensures excellent audio clarity and allows you to hear the details of your music
- One button inline smart remote control is convenient for playing, pausing, and receiving calls without fumbling with your phone
- Comes with ear adapters in four sizes (xs, s, m, l) to get a personalized fit for personal comfort
- In-ear design provides a secure fit and reduces ambient noise so you can relax and focus on your music
- Connectivity Technology: Wired
- Connector Type: 3.5mm Jack

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Q6NW778 |
| Additional Features | Integrated Remote Control, Microphone Included, Noise Isolation |
| Age Range Description | Adult |
| Amazon Bestseller | #433,314 in Electronics ( See Top 100 in Electronics ) #6,636 in Earbud & In-Ear Headphones |
| Antenna Location | Music, Travel, Call |
| Audio Driver Type | Dynamic Driver |
| Brand | Sennheiser |
| Built-In Media | [Cable, Ear Adapter Set(XS/S/M/L)] |
| Cable Features | Detachable |
| Cable Length | 1.2 メートル |
| Carrying Case Color | Black |
| Carrying Case Weight | 0.1 Ounces |
| Color | Black |
| Compatible Devices | Devices with 3.5mm audio jack or compatible adapter |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Control Type | Remote Control |
| Controller Type | Button |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.1 out of 5 stars 1,793 Your Review |
| Ear Placement | In Ear |
| Earpiece Shape | Rounded |
| Enclosure Material | Silicone Plastic |
| Form Factor | In Ear |
| Frequency Range | 17Hz-21000Hz |
| Global Trade Identification Number | 00615104327801 |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 18 Ohms |
| Item Type Name | Headphones |
| Item Weight | 12 Grams |
| Manufacturer | Sennheiser |
| Model Name | CX 300S |
| Model Number | CX 300S Black |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Series Number | 300 |
| Specific Uses For Product | personal |
| Style Name | In Earphone |
| UPC | 615104327801 707443717297 707443717327 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** Sennheiser
- **Color:** Black
- **Ear Placement:** In Ear
- **Form Factor:** In Ear
- **Impedance:** 18 Ohms

## Images

![CX 300S Black - Image 1](https://m.media-amazon.com/images/I/51Xm1Azh4qL.jpg)
![CX 300S Black - Image 2](https://m.media-amazon.com/images/I/51dJd21SNTL.jpg)
![CX 300S Black - Image 3](https://m.media-amazon.com/images/I/51FuY2ilzfL.jpg)

## Questions & Answers

**Q: Does it have a microphone and how good is it?**
A: Works well on my phone and PC for taking calls at least.

**Q: One customer claims it has volume control. Unless I'm missing something, it does not have remote volume control.**
A: It does not have volume control per se, but it can be configured.  There are +/- buttons on the part of the cord where the mike is.  The default on an iphone is those buttons skip the song forward and back.  In settings/control center, you can redefine these buttons to use as volume control.  I suspect that android operating systems have something similar.

**Q: Do these have same length left and right cables**
A: Yes. The cables are the same size.

**Q: Can I get an answer on exactly how long the cord is?**
A: 1.2 meters that's from sennheisers website

## Customer Reviews

### ⭐⭐ ...
*by B***T on October 30, 2024*



### ⭐ defective - right side barely works after 3 months
*by S***I on September 27, 2023*



### ⭐ It broke just after a few weeks!
*by I***2 on October 9, 2023*



## Frequently Bought Together

- Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Black
- JXMOX USB Type C to 3.5mm Female Headphone Jack Adapter, USB C to Aux Audio Dongle Cable Cord Compatible with iPhone 16 Pro Max 15 Pro Max, Samsung Galaxy S24 S23 S22 Ultra, Pixel, iPad Pro, MacBook
- Apple MFi Certified 2 Pack Lightning to 3.5 mm Headphone Jack Adapter for iPhone, iPhone Aux Adapter Converter Dongle Audio Cable Compatible with iPhone 14 13 12 11 X XS 8 7

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**Shop now:** [https://www.desertcart.co.uk/products/728082888-cx-300s-black](https://www.desertcart.co.uk/products/728082888-cx-300s-black)

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*Product available on Desertcart Great Britain*
*Store origin: GB*
*Last updated: 2026-04-27*