3M™ Peltor™ WS™ LiteCom Pro III headset is a hearing protector with built-in analog and digital programmable 2-way communication radio, level dependent hearing protection, Bluetooth® functionality and a jack to connect to external devices. The analog and digital 2-way radio enables clear, hands-free communication in high levels of noise and integrates seamlessly into your existing 2-way radio system. And with Bluetooth® multipoint functionality, workers can be wirelessly connected to two mobile devices. Plus, workers stay protected, aware and able to communicate face to face while never removing their hearing protection through level dependent functionality. And all of this technology is combined with the professional grade durability and all day wear ability you've grown to expect from PELTOR™. Peltor™ 7100099586, 2-Way Radio, For Use With: 3M™ Peltor™ WS™ Series Hard Hats, Specifications: 25 dB NRR, Li-Ion Battery Power Source, 11 hr Battery Life, Dark Blue