【Superior Sound Quality With Balanced Armature Knowles Driver】 FIIL bluetooth headphones with custom-designed 10mm dynamic driver,provides deep bass and clear mids, while the matched Knowles balanced Armature driver reproduces delicate, natural high tones .Two types of unit in this wireless in-ear headphones are combined to deliver powerful, balanced high-fidelity sound for the premium listening experience.

【Digital Noise Canceling Technology】 FIIL digital noise canceling headphone can reduces ambient noise to enhance your audio entertainment. The headphones have an inside microphone on each earpiece that work with an electronic circuitry to create an opposite sound wave to reduce wave. It reduces up to 98% ambient noise when the noise canceling circuit is switched on. Perfect for loud and noisy environments.

【Improve Awareness Through Monitoring Mode】 FIIL digital noise reduction earphones features a unique monitoring mode, simply pressing the MFC button's three times to enter monitoring mode , then you can clearly hear airline or subway announcements and without ever having to press pause. Perfect for listening to announcements, flight attendants, or any external sound.

【Absolute Comfort Ergonomic Neckband Design】 A lightweight, contoured neckband conforms to your body. It's designed with soft materials to stay comfortable, perfect for listening all day. With 4 optional size of silicone ear tips fits different sizes of ear canals, allow you listening to the music for a long time without pain perception and keep a long sense of comfort ,adding passive noise cancellation and refining the bass in your music.

【Sports Maganetic Clasping Earbuds】 Powerful Magnets can attach two earbuds together when not in use, prevent the headphones from sliding off or cable tangle, so the headphones can hang securely around your neck like a necklace. Magnetic rear earbud covers provide a necklace-like shape for convenient storage around your neck when not in use.