Electronic system protects your hearing
Won't prevent you from hearing your surroundings
Auxiliary input jack for MP3 or smartphone
NRR 20dB rated
The Radians Smith & Wesson SW209 Premium Electronic Earmuff is the comfortable way to protect your hearing. Electronic system allows you to hear your surroundings while still protecting your hearing. Easy-to-see LED "on" indicator light. Auxiliary input jack and cable for use of MP3 or smartphone for playback. NRR 20dB rated.