Features: Built-in directional microphone amplifies range commands and other ambient sounds to a safe 82 dB for more natural listening and enhanced communication. Features low-profile ear cups for easy removal; adjustable headband for a secure fit;compact foldable design for easy storage. It provides ultimate safety and ear protection. Safety is achieved through distortion-free amplification (up to 82 dB of safety) of important low-level sounds such as range commands and dialogue. Protection comes from instantly blocking any noise above 82 dB. Designed for use on the range or in the field, these ear cups also feature low profile ear cups that don"t interfere when aiming. The headband is padded for comfort, and the binoculars ensure a secure, custom fit. The external audio jack allows the earcups to double as stereo headphones when connected to an MP3 player or other audio source.Noise reduction function, converts high-decibel noise and crackling collected in 360 degrees into binaural microphones that are acceptable to human hearing, automatically handles noise above 82 decibels, and has a noise reduction ratio of 22 NRR, which can capture and amplify environments below 18 decibels / Talking soundExternal audio jack to connect devices, MP3 players or other audio sources, ear cups can also be used as stereo headphonesOne-touch volume knob to control noise canceling reception on/off and volumeHeadband size can be adjusted as needed , foldable design for easy carrying and storageof ear cups for use in the field or in the fieldComfortable and adjustable headband. Noise reduction, protect hearing. This allows you to hear important commands and key ambient sounds within range while hunting.Specifications:Battery Type: 2 AAA Batteries (Not Included)Size Chart:Unfolded Dimensions: Approx. 124 x 96 mm / 4.88 x 3.78 inchesFolded Dimensions: Approx. 101 x 96 x 124 mm / 3.97 x 3.78 x 4.88 inches : 1 pair of earphones 1 x charging cable 1 x user manual