Supreme Pro Sordin

Supreme Pro Sordin
Amplifies non-harmful sounds as much as four times while blocking out harmful sounds (such as a gunblast)
Individual On/Off and Volume controls
Padded headband and soft, foam filled ear cushions
Two microphones for stereo directional sound
AUX input for connecting external audio sources

Type: Over the Head 
Protection Level: NRR = 18db
Compression technology suppresses sound above 82 db maximum

Battery Type and Number:Three AAA
Batteries Included: Yes