The 3M™ PELTOR™ WS™ ALERT™ XPI Headset is the next generation protective communication solution. With Bluetooth® wireless communication, noise-cancelling boom microphone, integrated FM Radio and level dependent function for ambient listening, the WS™ ALERT™ XPI Headset not only helps protect you against hazardous noise, but also makes it easy to make phone calls with both hands free in noisy environments. High attenuating hearing protector model: standalone headband. Bluetooth® MultiPoint Technology for connection to one or two external devices. Level-dependent function for ambient listening to help improve your situational awareness, limited to 82dB. Push-to-Listen feature to easily and instantaneously listen to your surroundings. Built-in FM-Radio with radio volume limited to 82dB. Auto power off after 4 hrs of non-use to save battery. Includes 2x AA batteries and instruction manual. Available for indent order only.