These triple-duty hearing protectors have a built-in FM radio receiver, a stereo input jack (complete with 3' cable) for use with CD and MP3 players, and electronic sound reduction that lets you balance the level of external sound you want to hear as well as blocks all sound over 82db.
Separate control knobs let you use the features independently or balance them for use simultaneously. Passive noise reduction rating is 25db.
The unit weighs 15-1/2 ounces and requires two AA batteries (not included). Replacement pad set includes two ear cushions and two damping pads.
Good value in a combined audio headset and hearing protector.