Experience exceptional hearing protection with the FireMax Bluetooth Hearing Protection Muffs designed to keep your ears safe with Sound Activated Compression and a noise reduction rating of 23 dB. These black over-the-head muffs are constructed with a durable rubberized sound-dampening composite housing. Enjoy crystal-clear sound with full dynamic range HD speakers and four customizable frequency modes: Universal Clear Voice High Frequency Boost and Power Boost. Perfect for work or leisure they feature a TactiGrip headband with cooling gel earpads for comfort during extended wear. The digital soft-touch buttons provide silent and intuitive operation while the 2000 mAh lithium-ion battery offers up to 200 hours of use with USB-C charging. Auto shutoff adds convenience and a 3.5mm audio jack allows easy connectivity to mobile devices.