The AMP BT Electronic Earmuff features rubberized coating on the ear cups, quad microphones, and automatic shut-off after four hours. The muff is Bluetooth compatible and has a 3.5 mm Aux jack for use of MP3 and mobile devices. Two AAA batteries are included.
Specifications:

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