Protect your hearing while staying entertained and keeping in touch with colleagues with these ISOtunes LINK 2.0 ear defenders. They incorporate Bluetooth 5.0 technology which can be paired with two devices simultaneously. Stream music with excellent-quality audio and take calls using the noise-isolating microphone, designed for use in loud environments. With an SNR of 30dB, these electronic ear defenders also provide hearing protection for medium-noise environments.