The Razor Pro Digital muff features a high-performance digital circuit which delivers blazing fast reaction time ensuring optimum hearing protection. It has hi-gain omnidirectional microphones, superior clear digital sound, audio jack, and recessed volume control knobs. The muffs included two (2) AAA batteries.
Specifications:

Type	Electronic Earmuff
Color	Gray/Black
NRR	23 dB
Quantity	1 Pair
Style	Over the Head
AFT Circuit
Battery	AAA
Compression Circuit
Material	Polymer