DENON - AH-NCW500 HEADPHONES (SILVER) Noise Cancelling blocks out ambient noise. Bluetooth 3.0 Wireless Connectivity with CD Sound Quality for Premium, CD Quality Audio over Bluetooth (Bluetooth with aptX). Integrated Amplifier. Memory-foam, pentagonal-shaped ear pads provide superior comfort. Two-axis ear cup articulation for a perfect fit. Black Protein Leather with exposed stitching. Adjustable metal slider. Bluetooth 3.0 Wireless Connectivity, Integrated controls & microphones for superior mobility, ease of use, and convenience. Denon's patent-pending Control Wheel for control of iPod, iPhone, iPad, and other mobile devices via Bluetooth.