Hearing protection with Bluetooth for music streaming. Xstream connects via Bluetooth to your phone for wireless music streaming and phone calls. Your hearing is protected while you can enjoy your favorite music with excellent sound quality. The built-in voice microphone allows you to make phone calls. An optional boom microphone is available, providing clearer voice quality in noisy environments. Microphones with listening function in both capsules ensure excellent directional hearing and a natural sound experience. This allows you to engage in conversations and perceive warning signals or other important information without compromising protection.