With Bluetooth wireless communication, noise-cancelling boom microphone, integrated FM-radio and level-dependent function for ambient listening, the WS ALERT XP 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. Useful when you need to be connected to your mobile phone throughout the day (e.g. handymen in construction companies, private contractors driving their own machines, farmers in agriculture business, maintenance workers in industrial applications etc.); everywhere hands-free communication and hearing protection are a benefit.