---
product_id: 138201529
title: "Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black"
brand: "sennheiser"
price: "₩115103"
currency: KRW
in_stock: true
reviews_count: 13
category: "Sennheiser"
url: https://www.desertcart.kr/products/138201529-sennheiser-cx-300s-in-ear-headphone-with-one-button-smart
store_origin: KR
region: South Korea
---

# Precision German-engineered sound clarity Four ear tip sizes for perfect fit One-button smart remote for seamless control Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black

**Brand:** sennheiser
**Price:** ₩115103
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your sound game — because average earbuds just won’t cut it.

## Quick Answers

- **What is this?** Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black by sennheiser
- **How much does it cost?** ₩115103 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/138201529-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 Comfort Fit:** Choose from four earbud tip sizes (XS, S, M, L) to ensure a snug, noise-isolating fit that stays put all day.
- • **Sleek, Portable Design:** Lightweight 12g earbuds with a stylish black finish and included syn-leather pouch for safe, chic storage.
- • **Durable & Tangle-Resistant:** Thicker, reinforced cable with flat design resists tangling and stands up to daily hustle and grind.
- • **Immersive Audio Experience:** Feel every beat with Sennheiser’s signature transducer technology delivering crystal-clear highs and deep bass.
- • **Effortless Control On-the-Go:** One-button inline smart remote lets you play, pause, and take calls without missing a beat or fumbling for your phone.

## Overview

The Sennheiser CX 300S In-Ear Headphones combine precision German engineering with a customizable fit and smart remote control, delivering superior sound clarity and enhanced bass. Designed for professionals on the move, these wired earbuds feature four sizes of ear tips for optimal noise isolation and comfort, a durable tangle-resistant cable, and a sleek carrying pouch. Perfect for immersive music listening and hands-free calls, the CX 300S offers a premium audio experience that stands out in any setting.

## 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: Sounds good. Metal casing. Seems sturdy - They sound good but are very uncomfortable for sleeping. I use ear buds to sleep to drown out the annoying snoring coming from my husband's side of the bed. I thought I would try out these Senheiser CX 300S ear buds because they were not too much more than the JBL T290 ear buds I was replacing (for the third time in 4 months making them much cheaper if they actually lasted). I paid $16.99 for each pair of the JBL's and the Senheisers were like $35 so it seemed like a good choice. They do seem durable with a metal casing (which is probably why they are uncomfortable for sleeping). They do sound a little richer than the JBL's which would have made them so much better for sleeping. I am keeping them to wear for streaming or to listen to music during the day.

## Features

- 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 ear
- Precision german engineering ensures excellent audio clarity, so you will hear every detail of your music.
- 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.
- Connectivity technology: Wired
- Connector type: 3.5 millimeter Jack

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N1YLC23 |
| Additional Features | Integrated Remote Control, Microphone Included, Noise Isolation |
| Age Range Description | Adult |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #7,313 in Electronics ( See Top 100 in Electronics ) #589 in Earbud & In-Ear Headphones |
| Brand | Sennheiser |
| Brand Name | Sennheiser |
| Built-In Media | [Cable, Ear Adapter Sets (XS/S/M/L)] |
| Cable Features | Tangle Free |
| Cable Length | 1.2 Meters |
| Color | Black |
| Compatible Devices | Devices with 3.5mm audio input |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Control Type | Remote |
| Controller Type | Wired |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 out of 5 stars 6,912 Reviews |
| Ear Placement | In Ear |
| Earpiece Shape | Rounded tip |
| Enclosure Material | Silicone, Plastic, Fabric |
| External Testing Certification | Não aplicável |
| Form Factor | In Ear |
| Frequency Range | 17 Hz to 21,000 Hz |
| Global Trade Identification Number | 00615104327801, 00707443717297, 00707443717327, 04044155245066 |
| Headphone Folding Features | In Ear |
| Headphone Jack | 3.5 mm Jack |
| Headphones Ear Placement | In Ear |
| Impedance | 18 Ohms |
| Is Autographed | No |
| Item Type Name | Headphone |
| Item Weight | 0.38 Ounces |
| 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 | Music, Call Control |
| Style Name | In earphone |
| UPC | 615104327801 707443717297 707443717327 |
| Unit Count | 1.0 Count |
| Warranty Description | 2 year manufacturer |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | Bluetooth |

## Product Details

- **Brand:** Sennheiser
- **Color:** Black
- **Ear Placement:** In Ear
- **Form Factor:** Ear-canal
- **Headphones Jack:** 3.5 mm Jack

## Images

![Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black - Image 1](https://m.media-amazon.com/images/I/51csP83Mr5L.jpg)
![Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black - Image 2](https://m.media-amazon.com/images/I/71jlvl3PWsL.jpg)
![Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black - Image 3](https://m.media-amazon.com/images/I/71UWh71gpiL.jpg)
![Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black - Image 4](https://m.media-amazon.com/images/I/61rx5k2VHEL.jpg)
![Sennheiser CX 300S in Ear Headphone with One-Button Smart Remote - Black - Image 5](https://m.media-amazon.com/images/I/51KjAhKsXjL.jpg)

## Available Options

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

## 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

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Sounds good. Metal casing. Seems sturdy
*by L***P on December 20, 2025*

They sound good but are very uncomfortable for sleeping. I use ear buds to sleep to drown out the annoying snoring coming from my husband's side of the bed. I thought I would try out these Senheiser CX 300S ear buds because they were not too much more than the JBL T290 ear buds I was replacing (for the third time in 4 months making them much cheaper if they actually lasted). I paid $16.99 for each pair of the JBL's and the Senheisers were like $35 so it seemed like a good choice. They do seem durable with a metal casing (which is probably why they are uncomfortable for sleeping). They do sound a little richer than the JBL's which would have made them so much better for sleeping. I am keeping them to wear for streaming or to listen to music during the day.

### ⭐⭐⭐⭐ This is mainly about silicon tips
*by G***O on October 25, 2019*

So, I'm not fond of writing negative reviews, and I really am fond of some of the things regarding these headphones, but.. Here we are. Some positives: 1. It looks very nice, I like the color and style 2. The medium size silicon buds are relatively comfortable.. After some initial adjusting, they're really good tips! (I will call them tips from this point on) Negatives, and why I'm writing this review: 1. The sound quality is.. Off. Specifically, I think there's something off about the bass. 2. While it's comfortable to wear, it was actually kind of painful to put in my ears at first. The tips were a little stiffer for some reason. They do soften up after time though, and then they're great. 3. The silicon tips... Fall off sometimes. I've don't know how, but I've rarely had this issue with other headphones. It's happened several times, and I eventually lost one of my medium tips (right ear). 4. The replacement silicon tips are.. Okay. The small one is the size I chose after the medium, and they look any form of noise cancellation, which means that it's harder to block out sounds if you're in any public space (say, a coffee shop). One of the small tips also fell off (left ear) after a few days of use. 5. I've looked around for replacements for these tips for some time, and Sennheiser only seems to want you to buy different tips from a company called Complyfoam, which... Is expensive. I just wish I could get a replacement for the ones that came with these headphones. Overall, the headphones aren't bad (though not worth the $50 price point, I'd say they're valid at $20). If you get these, just keep an eye on the silicon tips!

## 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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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-05-25*