- K&J Écouteurs-ESFUN in-ear headphones with ergonomic design that adapts to the shape of the ear, providing comfort and stability even during prolonged use - High-fidelity stereo sound, balancing deep bass, smooth mids, and crisp highs for an immersive experience - Built-in HD microphone and volume control on the cable, allowing you to manage calls, play music, and adjust the volume easily - Universal compatibility with devices that have a 3.5 mm jack input, such as Android smartphones, tablets, MP3/MP4 players, and more - Noise reduction system that minimizes external noise, ensuring clear calls and clean sound in any environment