Browning Midas Electronic Hearing Protection Products designed in the USA with quality materials High tensile and durability with all Browning gear Whether you're an avid outdoors man or recreational, good for all people Hearing protection for shooters and hunters Electronics reduce sharp noises while amplifying speech Fast 6-millisecond reaction time; on/off volume controls Runs on pair of AA batteries; LED battery life indicator Lasts for 100 to 120 hours on single set of batteries