Thanks for your interest in Haven Tech (ISOtunes Ear Buds).
ISOtunes offers unique, lightweight hearing protection products that combine great in-ear noise protection with Bluetooth connection capability to a smartphone or Bluetooth enabled device. With an excellent NRR, the user can assure noise suppression, listening capability and communication via an integrated voice microphone. Listen-only models available as well. OSHA/ANSI/NIOSH compliant.