Frequency Response: 20Hz – 20kHz
Other Features: Active Noise Cancelling, Bluetooth, Foldable, With Mic, With Remote and Mic, Inline Volume Control, Noise Cancelling, Noise Isolation, Stereo Bluetooth .
Compatiblity Bluetooth 2.0 with Batteries Rechargeable Lithium-Ion Battery Life Up To 12 Hours Wireless Use Up To 20 Hours Wired Use .