The Koss GMR-540-ISO USB In-Ear Headphones offer a versatile audio experience for general use. With a wired design and robust construction, these headphones are ideal for daily use. They feature a frequency range of 18 to 20,000 Hz, allowing for clear and precise sound reproduction. The headphones come with a 1.2-meter long cable that provides comfortable usage, while the built-in microphone facilitates communication. With a sensitivity of 101 dB, the audio output is loud and clear, and the maximum noise level limit of 103 dB ensures a pleasant listening experience. These headphones are an excellent choice for anyone who values quality and comfort.

• Wired design for reliable signal transmission
• Frequency range of 18 to 20,000 Hz for clear sound reproduction
• Built-in microphone for easy communication
• Lightweight at 220 grams for high wearing comfort.