---
product_id: 125228886
title: "Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red"
brand: "sennheiser"
price: "$78.36"
currency: USD
in_stock: true
reviews_count: 13
category: "Sennheiser"
url: https://www.desertcart.us/products/125228886-sennheiser-cx-300s-in-ear-headphone-with-one-button-smart
store_origin: US
region: United States of America
---

# Precision German audio clarity Effective ambient noise isolation One-button smart remote control Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red

**Brand:** sennheiser
**Price:** $78.36
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game—because your ears deserve the best.

## Quick Answers

- **What is this?** Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red by sennheiser
- **How much does it cost?** $78.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/125228886-sennheiser-cx-300s-in-ear-headphone-with-one-button-smart)

## 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 Fit Comfort:** Four sizes of silicone ear adapters (XS, S, M, L) ensure a personalized, secure fit that stays comfortable all day—even during intense workouts or long commutes.
- • **Durable & Travel-Ready:** Reinforced cable and robust 3.5mm jack built to withstand daily hustle, making these earbuds your reliable companion for every business trip or city adventure.
- • **Noise Isolation Mastery:** In-ear design blocks out distracting ambient noise so you can focus on your music or calls, creating your own private sound bubble anywhere.
- • **Immersive Sound Experience:** Precision-engineered transducers deliver crystal-clear highs and deep, punchy bass for a truly captivating audio journey.
- • **Seamless Control On-the-Go:** One-button inline smart remote lets you effortlessly play, pause, and take calls without reaching for your device—perfect for busy professionals.

## Overview

The Sennheiser CX 300S In-Ear Headphones combine German precision engineering with a customizable fit and smart remote control, delivering superior sound clarity and bass response. Designed for professionals on the move, these earbuds offer effective noise isolation, durable build quality, and seamless device control via a one-button inline remote. With four ear tip sizes included, they ensure personalized comfort and a secure fit, making them ideal for work, travel, and active lifestyles.

## Description

Boost your sound with Sennheiser’s CX 300S earphones which offer amazingly detailed sound reproduction and enhanced bass response thanks to Sennheiser’s transducer technology. S, M, L) to choose from. A Smart remote enables you to play/pause music and take calls across all devices.

Review: Best earbuds I've ever owned...so far. - After a bad outing with the Sennheiser CX 100 (they lasted 10 days before the left earbud died), I decided to try the CX 300S due to its perceived improved build quality. I've had them since April 20th, and so far, so good. The cable is thicker and the 1/8th inch plug is reinforced much more sturdily than the CX 100. These earbuds are *extremely* comfortable. You can sleep in them and you don't even notice them in your ears. Sound isolation is very good, much better than CX 100. When working out at the gym, external noise is cancelled. The bass is also much improved over the CX 100. However, I find that the mids are a touch cleaner with better soundstage on the CX 100. But overall, the CX 300S provides a more exciting listening experience, especially if you're a basshead. I'm really hoping these last. Best earbuds I've ever owned. Worth the price and the sound quality is just on another level entirely compared to the earbuds you get with phones. UPDATE: Best headphones I've yet owned. A few months in, no issues, even after being run over by a car. It doesn't feel like you're wearing them, noise cancelling is acceptable, sound quality fantastic. Only issue is the inline mic is weak at recording field sounds (it's okay for calls) and the jack comes out easy, which I'm assuming was designed this way to prolong the life of the connection at the jack point. I LOVE these. I would buy another in a second. And Sennheiser has a fan for life.
Review: Easily my FAVORITE wired earbuds - just purchased round 2! - These are the BEST wired earbuds under $100 I have EVER used. These have been my road warrior with me on many business trips already. I have a nontraditional Android phone that still has a 3.5mm Jack, and I prefer that over opening up Bluetooth at airports any day. It's always reliable since you don't need to charge anything, the sound is intense, full of bass, and maintains three quality even when it is set to a loud volume. The rest cusions are easy to swap, but hold in extremely well. I LOVE(D) these earbuds... however, I just got back from a trip to Alexandria outside of Washington DC and my pair was stolen from me. I suppose others out there knew how great these were and jumped on the chance to steal them. In any case, there was ZERO hesitation purchasingb replacement earbuds. If you're like me, and have to have complete control of your components, preferring wired headsets, I would HIGHLY recommend these earbuds!

## Features

- Precision German engineering ensures excellent audio clarity, so you will hear every detail of your music
- Product Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears
- One button inline smart remote makes it convenient to play and pause music and take calls without needing to fumble with your phone
- Four sizes (XS, S, M, L) of ear adapters are included so you can get an individualized fit for personal comfort
- In ear design creates a secure fit for excellent reduction of ambient noise so you can relax and focus on the music

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N9J4BTK |
| Additional Features | Lightweight, Microphone Included, Noise Isolation, Tangle Free Cord |
| Age Range Description | Adult |
| Antenna Location | Music |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #5,685 in Electronics ( See Top 100 in Electronics ) #462 in Earbud & In-Ear Headphones |
| Brand | Sennheiser |
| Brand Name | Sennheiser |
| Built-In Media | CX 100 Earphones, 4 Ear adapter Sizes (XS/S/M/L) |
| Cable Features | Retractable |
| Color | Red |
| Compatible Devices | Cellphones, Tablets, Laptops, Desktops |
| Connectivity Technology | Wired |
| Control Method | Remote, Touch |
| Control Type | remote |
| Controller Type | remote |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 out of 5 stars 6,982 Reviews |
| Ear Placement | In Ear |
| Earpiece Shape | Rounded tip |
| Enclosure Material | Silicone |
| Form Factor | In Ear |
| Frequency Range | 17 Hz to 21,000 Hz |
| Global Trade Identification Number | 00615104327825 |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 18 ohm |
| Item Type Name | Headphone |
| Item Weight | 10.8 g |
| Manufacturer | Sennheiser |
| Model Name | CX 300S Red |
| Model Number | CX 300S Red |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Specific Uses For Product | Personal |
| Style Name | In earphone |
| UPC | 615104327825 |
| Unit Count | 1 Count |
| Warranty Description | 2 year manufacturer |
| Water Resistance Level | Not Water Resistant |

## Product Details

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

## Images

![Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red - Image 1](https://m.media-amazon.com/images/I/51ov0q9cRvL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best earbuds I've ever owned...so far.
*by M***L on May 7, 2022*

After a bad outing with the Sennheiser CX 100 (they lasted 10 days before the left earbud died), I decided to try the CX 300S due to its perceived improved build quality. I've had them since April 20th, and so far, so good. The cable is thicker and the 1/8th inch plug is reinforced much more sturdily than the CX 100. These earbuds are *extremely* comfortable. You can sleep in them and you don't even notice them in your ears. Sound isolation is very good, much better than CX 100. When working out at the gym, external noise is cancelled. The bass is also much improved over the CX 100. However, I find that the mids are a touch cleaner with better soundstage on the CX 100. But overall, the CX 300S provides a more exciting listening experience, especially if you're a basshead. I'm really hoping these last. Best earbuds I've ever owned. Worth the price and the sound quality is just on another level entirely compared to the earbuds you get with phones. UPDATE: Best headphones I've yet owned. A few months in, no issues, even after being run over by a car. It doesn't feel like you're wearing them, noise cancelling is acceptable, sound quality fantastic. Only issue is the inline mic is weak at recording field sounds (it's okay for calls) and the jack comes out easy, which I'm assuming was designed this way to prolong the life of the connection at the jack point. I LOVE these. I would buy another in a second. And Sennheiser has a fan for life.

### ⭐⭐⭐⭐⭐ Easily my FAVORITE wired earbuds - just purchased round 2!
*by T***I on May 17, 2025*

These are the BEST wired earbuds under $100 I have EVER used. These have been my road warrior with me on many business trips already. I have a nontraditional Android phone that still has a 3.5mm Jack, and I prefer that over opening up Bluetooth at airports any day. It's always reliable since you don't need to charge anything, the sound is intense, full of bass, and maintains three quality even when it is set to a loud volume. The rest cusions are easy to swap, but hold in extremely well. I LOVE(D) these earbuds... however, I just got back from a trip to Alexandria outside of Washington DC and my pair was stolen from me. I suppose others out there knew how great these were and jumped on the chance to steal them. In any case, there was ZERO hesitation purchasingb replacement earbuds. If you're like me, and have to have complete control of your components, preferring wired headsets, I would HIGHLY recommend these earbuds!

### ⭐⭐⭐⭐ Great Choice for Recreational Use
*by R***H on January 2, 2020*

I previously owned Skull Candy Ink'd headphones, but the microphone broke. I've owned expensive Sennheiser open backed headphones that I love, so I thought I'd give these a try. First off, the construct is high quality. All of the tangible parts feel great and you know they took great care in designed them. The audio jack is skinny and will fit into your phone even if it has a bulky case. At the time, my skull candy earbuds were about $20, so comparing the audio between these and them, I'd say the Sennheiser sounds AT LEAST two times better. Like other Sennheiser products, the treble and base are well balanced, The sound comes in softer than cheaper earbuds and the best way to describe cheap earbuds is they BLURT music instead of it being carefully constructed. Not to talk these up too much because you are buying earbuds. I haven't heard an earbud sound nearly as good as a quality pair of headphones. These are great for recreational use: running, hiking, working out or routine housework. I saw a couple of reviews talk about noise cancellation. you DO NOT get noise cancellation with these. They give you plenty of tips to fit your ear as best as possible. If you have the right fit, its like wearing foam ear plugs and most of the ambient noise is blocked. However, it does not feel like foam earplugs and the ergonomic design fits the ear very well and is very comfortable. Overall for the price, it is a really great product, and if you're like me, you'll use them for years.

## Frequently Bought Together

- Sennheiser CX 300S In Ear Headphone with One-Button Smart Remote - Red
- OneKer USB Type C to 3.5mm Headphone Jack Adapter, (2-Pack) USB C to Aux Female Audio Dongle Cable Cord Compatible with iPhone 16/15 Pro/15 Plus/15 Pro Max,iPad Pro,MacBook, Samsung Galaxy S24 S23 S22
- 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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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-20*