Shellshock Protection EXO PRO Bluetooth Protective Ear Muffs 21 db Pair of 1 Black. Exceptional noise protection with Bluetooth audio streaming and electronic sound amplification. Specifications for Shellshock Protection EXO PRO Bluetooth Protective Ear Muffs: Manufacturer: Shellshock Protection Color: Black NRR: 21 dB Quantity: 1 Size: One Size Features of Shellshock Protection EXO PRO Bluetooth Earmuff 86889853 Bluetooth audio streaming Electronic noise amplification 28dB SNR / 22dB NRR PureSeal gel cups Wireless connectivity Mutes dangerous impulse noise Package Contents: Shellshock Protection EXO PRO Bluetooth Earmuff 86889853 2x AAA Batteries Shellshock Protection EAR-EXO-BLUE: EXO PRO Bluetooth Protective Ear Muffs 21 db Pair of 1 Black