Pyramex's Venture Gear Sentinel Electronic Earmuff features slim profile ear cups, fold-away, padded headband, and a front facing microphone. The muff helps amplify hearing, while compressing harmful sounds and reducing them to a safe level. It also has an auto shut-off after four hours, 3.5 mm AUX jack for use of MP3 and mobile devices and height adjustment to fit all sizes.
Specifications:

Type	Electronic Earmuff
Color	Black
NRR	26 dB
Quantity	1 Pair
Style	Over the Head
AFT Circuit
Battery	AAA
Compression Circuit
Material	Polymer