Monoprice Bluetooth Headphones with Active Noise Cancelling, 20H Playback/Talk Time, with The AAC, SBC, Qualcomm aptX, and Qualcomm aptX Low.

CD Quality Sound: The Monoprice Bluetooth Headphones with Active Noise Cancelling features a range of high quality audio codecs for the best sound possible. It includes the standard AAC and SBC codecs, as well as the more advanced Qualcomm apt X and Qualcomm apt X Low Latency codecs. Long Distance Connections: The Bluetooth radio features a range of up to 32 feet (10 meters), giving you the freedom to move around without being tethered by wires.