TRACKR™ Blu Ear Muffs offer the world's most advanced hearing enhancement, hearing protection, and Bluetooth audio - all inside of a compact, slimline ear muff for all your ear pro needs. Turn your hearing up or down to your exact desired level, then enjoy clear hearing for any environment you want. Then notice while you are hearing everything you want, the AXIL technology will automatically shut out damaging loud sounds to give you the hearing protection you need- all at the same time, without interrupting your clear hearing. You can also enjoy 5.0 Bluetooth for audio and hands-free communication.