protear bluetooth radio headphones wireless cancelling hearing protection, noise reduction nrr 25db safety ear muffs rechargeable 1200 mah lithium battery ear protector for lawn mowing work protear our hearing protector incorporates highly advanced technology providing you with unsurpassed sound quality, excellent speech clarity, superior hearing protection and sound enhancement. <br> <br><b>description:</b> <br> 3.5mm power input jack for usb charging,<br> auto search and frequency scanning function <br> the electronic sound activated compression circuitry provides an additional layer of protection. <br> built-in antenna with high reception sensitivity <br> support the function of switch between am and fm for your any selection <br> with function of frequency scanning and searching automatically, frequency range from 87.5-108mhz in fm and 520-1710 khz in am <br> clearly show with low battery digital display, frequency and timing display <br>comply with usa epa regulation <br> time mode is also the standby mode, it nearly consumes no battery power. <br> <br><br><b> package included: </b> <br> 1x bluetooth ear muff <br> 1x usb charging cable <br>1 x user manual<br> <br> <br>notes:if you have any questions or problem with the product, please feel free to contact our customer service, we are more than glad to help you.<br>for more products please search "protear" on amazon.