Koss

Koss KSC21k wired in-ear headphones black

Wireless connectionNo
Connector type3.5 mm
Wearing styleIn-ear
Impedance36 Ω
Frequency range50-18k Hz

The Koss KSC21k are wired in-ear headphones built for everyday listening. With a 3.5 mm jack connection and a frequency range of 50–18,000 Hz, these compact earphones deliver clear audio across music, podcasts, and calls without the complexity of wireless connectivity.

Description

Reliable wired audio in a lightweight design

50–18,000 Hz frequency response for balanced sound across all genres
3.5 mm connector compatible with phones, tablets, and audio devices
In-ear fit with secure, comfortable wearing style
Durable construction weighing just 20 g for all-day portability
36 Ω impedance optimized for portable devices

These headphones suit anyone who prefers the reliability of a wired connection—whether you're commuting, working out, or enjoying music at home. They're an ideal choice if you want straightforward sound without pairing hassles or battery worries.

Specifications

Brand	Koss
Wireless connection	No
Connector type	3.5 mm
Wearing style	In-ear
Impedance	36 Ω
Frequency range	50-18k Hz
Colour of product	Black
Net weight	0.02 kg
Headphones connection type	Wired
Microphone	No
Noise canceling	No
USB charging port	No
Wireless	No
EAN	021299175545