Quality Plastic material, simple and elegant, easy to wear This product has been subject to 69 stringent testing, including drop tests, temperature tests, tension tests, and button-pressing tests. The product is durable and meets European CE safety standards. | Great acoustics Comfier and more adaptable than other in-ear headphones thanks to their unique ergonomic design.Better mid- range performanceEnhanced bass output | Audio review Rich, snappy bass for a soothing, mellow sound. Clear, resonant mid- range rendering a textured timbre to vocals. A textured high end which isn't too shrill. Good frequency response and balance for a high- fidelity listening experience. |