The Klein Tools Bluetooth Behind-the-Head Earmuffs feature a unique, versatile headband that can be worn with a variety of head protection with minimal interference. The angled soft foam cushions provide an effective acoustic seal. When not in use, pivot the earmuff cups to comfortably wear around the neck to keep them within reach. The earmuffs are equipped with Bluetooth technology, allowing for seamless pairing and premium sound quality. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.