The Koss KSC21k are wired in-ear headphones designed for casual listening. They are suitable for users who prefer a simple, no-frills audio experience without the need for wireless connectivity.

• In-ear design provides a secure fit for comfortable listening.
• Wired connection with a 3.5 mm connector ensures compatibility with various audio devices.
• Frequency range of 50 Hz to 18 kHz delivers a wide sound spectrum for different music genres.
• Lightweight design at just 0.02 kg makes them easy to carry and wear for extended periods.