The Sennheiser IE 80 S BT In-Ear Headphones deliver outstanding accuracy and a breathtaking soundstage from a sleek neckband design. Audiophile quality is assured by hi-res codec support including LHDC, aptX HD and AAC and high-end AKM DAC. Its balanced sound can be adjusted via the Smart Control App and its 5-band equalizer. It comes with ear adapters in silicone, lamellar and Comply? Memory Foam in a choice of three sizes that help to ensure a perfect fit for excellent passive attenuation of external noise.