{"product_id":"3m-90543-4dc-bluetooth-hearing-protection-earmuff-24-db-nrr","title":"3M 90543-4DC Bluetooth Hearing Protection Earmuff 24 Db Nrr","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe 3M 90543-4DC is a Bluetooth-enabled hearing protection earmuff designed for trade professionals who need both hearing protection and audio connectivity on the job. It carries a Noise Reduction Rating (NRR) of 24 dB, providing meaningful protection in loud work environments. The unit streams audio wirelessly from any Bluetooth-enabled device and includes an integrated microphone for hands-free calls without removing the earmuff. A built-in rechargeable battery powers the unit, and a 2-hour auto shut-off with low battery indicator helps manage power on long shifts. Audio Assist technology provides voice-guided setup without removing the headset.\u003c\/p\u003e\u003cp\u003eThis earmuff is suited for residential and commercial jobsites where sustained noise exposure requires hearing protection — including HVAC mechanical rooms, construction sites, and electrical panel work. The flexible headband with cutouts accommodates hard hat caps, and the low-profile, soft ear cushions allow for all-day wear. For non-Bluetooth devices, a 3.5mm audio input is available (cable not included). This package contains 4 units, making it appropriate for crew-level purchasing or contractor inventory. Installation and setup require no tools; licensed tradespeople and general laborers can deploy these units immediately.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e24 dB Noise Reduction Rating (NRR) for hearing protection in high-noise environments\u003c\/li\u003e\n\u003cli\u003eBluetooth wireless audio streaming and integrated microphone for hands-free calls\u003c\/li\u003e\n\u003cli\u003eAudio Assist technology provides voice-guided operational setup without removing the headset\u003c\/li\u003e\n\u003cli\u003eBuilt-in rechargeable battery with 2-hour auto shut-off and low battery indicator\u003c\/li\u003e\n\u003cli\u003eFlexible headband with cutouts designed for compatibility with work caps and hard hats\u003c\/li\u003e\n\u003cli\u003e3.5mm audio input for use with non-Bluetooth devices (cable sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with any Bluetooth-enabled mobile device for wireless audio streaming. Also compatible with non-Bluetooth devices via 3.5mm audio cable (not included). AC charging adapter is not included. Compatible with stand use per manufacturer specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eNo tools or licensed trade installation required. Units arrive ready to use and are charged via the included charging cord before first use. Do not expose to water or extreme temperatures during storage or use. Ensure the headset is powered down and fully charged before deployment in a high-noise work environment to avoid mid-shift battery failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Reduction Rating (NRR)\u003c\/strong\u003e: 24 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity\u003c\/strong\u003e: Bluetooth wireless; 3.5mm audio input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery\u003c\/strong\u003e: Built-in rechargeable; charging cord included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e: 2 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 4 units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.88 pounds (package)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: 3M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 90543-4DC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":51524432658738,"sku":"90543-4DC","price":486.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dea4412a46037a269e026fd8f25fcac2.jpg?v=1785449026","url":"https:\/\/voomisupply.com\/products\/3m-90543-4dc-bluetooth-hearing-protection-earmuff-24-db-nrr","provider":"Voomi Supply","version":"1.0","type":"link"}