In original box.  Sounds amplification works but the headphones do not play any sound (Bluetooth or wired).  Has all original parts and cables and the Bluetooth Wireless Audio Streamer (which adds Bluetooth to any audio output device).

Engineered and designed in the USA
Amplification: omnidirectional microphones on each ear allow for amplification of surrounding sounds to the level desired.
Active protection: sound activated compression Instantly activates to protect from harmful noises (NRR 21 dB).