The 3M ™ PELTOR ™ WS ™ ProTac XPI Bluetooth® headset features level-dependent microphones, which ensure that ambient sounds are audi ble and communication is possible in noisy environments. Still protected against constant noise or spikes of noise. If the environment awareness function is low or even disabled, you can use the push-to-listen (PTL) if you suddenly find yourself in a situation where you need to be aware of your environment. A simple push of a button resets the level of ambient noise to your preferred setting. Bluetooth multipoint connectivity for simultaneous seamless connection with two external Bluetooth devices. Yellow (high-viz) color that provides extra visibility in harsh conditions. IP68-classified microphone with ambient noise suppression, optimized for environments with harmful noise levels. Use the FLX2 accessory system for an additional, simple and reliable cable connection for the most common 2-way radios. A robust PTT on the headset, for radio communication.