Walker's GWPRSEQMBT Razor Slim Electronic Muff 23 dB Over the Head Black PolymerRazor Slim Electronic Quad Muffs feature Bluetooth technology with independent volume control. This allows the shooter to control the volume of the ambient noise around them separately from the volume of their Bluetooth connected device. An integrated communication microphone allows for easy communication with others, while 4 hi gain omnidirectional microphones pick up sounds 360 degrees around the shooter. A compact folding design and comfort