---
product_id: 266656770
title: "KSC21 17.8 x 7.6 1.9 cm ; 45.4 g Sportclip Clip-On Headphones (3.5 mm Jack) for iMac/Laptop/iPhone/iPad/iPod/MP3 Players/Samsung/Smartphones - Black, Wired"
brand: "koss"
price: "S$38"
currency: SGD
in_stock: true
reviews_count: 5
category: "Koss"
url: https://www.desertcart.sg/products/266656770-ksc21-17-8-x-7-6-1-9-cm-45
store_origin: SG
region: Singapore
---

# Lightweight sportclip design 4 ft dual-entry 3.5mm cord 40-20,000 Hz frequency response KSC21 17.8 x 7.6 1.9 cm ; 45.4 g Sportclip Clip-On Headphones (3.5 mm Jack) for iMac/Laptop/iPhone/iPad/iPod/MP3 Players/Samsung/Smartphones - Black, Wired

**Brand:** koss
**Price:** S$38
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your workout soundtrack with legendary fit and sound — don’t just listen, belong.

## Quick Answers

- **What is this?** KSC21 17.8 x 7.6 1.9 cm ; 45.4 g Sportclip Clip-On Headphones (3.5 mm Jack) for iMac/Laptop/iPhone/iPad/iPod/MP3 Players/Samsung/Smartphones - Black, Wired by koss
- **How much does it cost?** S$38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/266656770-ksc21-17-8-x-7-6-1-9-cm-45)

## Best For

- koss enthusiasts

## Why This Product

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

## Key Features

- • **Freedom to Move:** Generous 4-foot dual-entry cord lets you stay active without tangles or restrictions during workouts or commutes.
- • **Seamless Compatibility:** Universal 3.5mm jack works flawlessly with your iPhone, laptop, MP3 player, and all your favorite devices.
- • **Crystal-Clear Soundstage:** Extended 40-20,000 Hz frequency range delivers rich highs and satisfying bass that bring your playlists to life.
- • **Trusted Legacy & Warranty:** Backed by Koss’ Limited Lifetime Warranty and 50+ years of audio innovation—join the audiophile community that never settles.
- • **Effortless All-Day Comfort:** Pivoting ear plates and foam cushions ensure a perfect, pressure-free fit for marathon listening sessions.

## Overview

The Koss KSC21 Sportclip Headphones combine ultra-lightweight design with pivoting ear plates and foam cushions for a secure, comfortable fit. Featuring an extended 40-20,000 Hz frequency response and a 4-foot dual-entry 3.5mm cord, these wired headphones deliver clear, dynamic sound compatible with most devices. Perfect for active professionals seeking premium audio on the move, they come backed by Koss’ Limited Lifetime Warranty and decades of trusted craftsmanship.

## Description

Product Description The Original StereophoneFor some, music is a nice distraction. A thing to tap your toes to. For us, music isn’t a thing; it’s a place we go. We are the true believers.Koss has been bringing people closer to the music they love for more than 50 years. The first Stereophone (SP/3) in the world was created by John C. Koss and Martin Lange in 1958 and since then, Koss’ innovative products have gone from strength to strength with a range now including Full Size Stereophones, On-Ear Stereophones, In-Ear Stereophones, Ear-Clip Stereophones, Wireless Stereophones and Communication Headsets. Now, more than 50 years later….Koss’ creation has become a $2 billion industry, worldwide.Three principles serve as the foundation for the company’s success: The sound of Koss; focus on fit and breakthrough customer service. What do these principles mean?The sound of Koss: Musician, John C. Koss created “the sound of Koss” in 1958 and we have stayed true to it to this every day. The sound of Koss brings music back to life. Koss engineers are rigorous in their pursuit of the absolute best sound but it is the human listening experience that sets Koss apart.Focus on fit: We are obsessed with creating the absolute perfect fit – without it; we can’t get the perfect sound. We strive to create products that offer custom settings for every music lover. Our products couple to the ear – it’s just you and your music.Breakthrough customer service: Koss was the first to offer Limited Lifetime Warranty in 1989. Our domestic customer support staff is ready to help any listener with any issue. The Koss US factory and warehouse is based in Milwaukee Wisconsin – logistically, Koss has created an onsite inventory system that makes “out-of-stocks” virtually impossible. With that in mind, what do the KSC21 SportClip Stereophones have to offer you?Koss KSC21 SportClip StereophonesEnjoy high fidelity sound quality while remaining connected to the outside world with the Koss KSC21 sport clip headphones. These over-the-ear headphones deliver a wide-range, extended frequency response through soft foam ear cushions that guarantee an open, hear-through sound. The pivoting ear plates provide a better fit than most clips, so you can place them exactly for the perfect fit.KSC21’s are super light making them feel practically weightless, even after hours of high fidelity listening and the straight, dual entry 4 foot cord with 3.5mm plug allows you extensive freedom of movement to ensure that you can position the headphones for optimum listening. When not in use, simply tuck them into your briefcase, gym bag or pocket and carry them with you wherever you go.This is all backed up by the Koss Stereophones Limited Lifetime Warranty.When you choose the KSC21, you’re rewarded with only the best sound. Set Contains: 1 x "KSC21" sportclip headphones

Review: Love these small over the ear vs ear buds when lying in bed. Sound is great and can lay on your side without the pressure from the earbuds digging into your brain :-) Price was a little high, but great quality, sound and fit!
Review: Eindelijk een clip-on met voldoende bass. Koss geluidskwaliteit! De KSC75 voor thuis, deze rakker voor on the road. Klein en licht. Ik draai veel dub met flinke lage tonen en deze geeft t fatsoenlijk weer. No brainer!

## Features

- Lightweight sportclip design with pivoting ear plates for a better fit
- Extended 40-20,000Hz frequency response
- Improved signal transmission and conduction for cleaner, clearer sound
- Ear cushions guarantee an open, hear-through sound
- Includes a straight, dual-entry 4 foot cord with 3.5 mm (1/8-inch) plug
- Frequency Response: 40-20,000 Hz
- Dynamic element for extended frequency response
- Lightweight Sportclip design
- Foam cushions for an open, hear-through sound
- Straight, dual entry 1.2m cord and 3.5mm jack plug

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004WD1F1O |
| Age range (description) | adults |
| Best Sellers Rank | #106,531 in Electronics ( See Top 100 in Electronics ) #380 in On-Ear Headphones |
| Cable feature | Retractable |
| Compatible devices | Most devices with a 3.5 mm audio jack, including smartphones, laptops, and MP3 players |
| Connectivity technology | Wired |
| Control method | Touch |
| Control type | Volume Control |
| Department | Unisex-Adult |
| Frequency response | 20000 Hz |
| Headphone jack | 3.5 mm Jack |
| Included components | See Specs |
| Item model number | KSC21 |
| Item weight | 1.6 Ounces |
| Manufacturer | Koss |
| Material | Plastic |
| Model name | KSC21 |
| Noise control | None |
| Number of Items | 1 |
| Package type | Standard Packaging |
| Product Dimensions | 17.78 x 7.62 x 1.91 cm; 45.36 g |
| Recommended uses for product | Exercising, Running |
| Sensitivity | 101 dB |
| Specific uses for product | Sports and Exercise |
| Style | Sporty |
| Water resistance level | Not Water Resistant |
| Wireless communication technologies | Bluetooth |

## Product Details

- **Brand:** Koss
- **Colour:** black
- **Ear placement:** Open Ear
- **Form factor:** On Ear
- **Impedance:** 26 Ohms

## Images

![KSC21 17.8 x 7.6 1.9 cm ; 45.4 g Sportclip Clip-On Headphones (3.5 mm Jack) for iMac/Laptop/iPhone/iPad/iPod/MP3 Players/Samsung/Smartphones - Black, Wired - Image 1](https://m.media-amazon.com/images/I/61F8pZ7PfoL.jpg)

## Available Options

This product comes in different **Customer Package Type, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by P***P on 30 June 2022*

Love these small over the ear vs ear buds when lying in bed. Sound is great and can lay on your side without the pressure from the earbuds digging into your brain :-) Price was a little high, but great quality, sound and fit!

### ⭐⭐⭐⭐⭐ Review
*by P***R on 10 December 2020*

Eindelijk een clip-on met voldoende bass. Koss geluidskwaliteit! De KSC75 voor thuis, deze rakker voor on the road. Klein en licht. Ik draai veel dub met flinke lage tonen en deze geeft t fatsoenlijk weer. No brainer!

### ⭐⭐⭐⭐ Review
*by G***G on 8 November 2016*

J'utilise ces écouteurs pour une activité qui n'a rien avoir avec la musique donc je ne peux pas juger de la qualité du rendu mais ce sont des écouteurs dont je ne pourrai m'en passer pour mon utilisation. Par contre le câble d'origine est bien évidemment trop fin et certainement assez tôt vous aurez des soucis avec. Je l'ai changé par du plus costaud et souder un jack de meilleur qualité (neutrik).

## Frequently Bought Together

- Koss KSC21 SportClip Clip-On Headphones,Black
- Koss KSC75 Portable On-Ear Clip Headphones, Retro Style, Ultra Lightweight, Silver and Black
- Audio Technica ATH-EQ300M PL Purple | Ear-Fit Headphones (Japan Import)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-17*