3M HEAD EAR PROTECTION WITH BLUETOOTH BLACK

Reduces noise level by up to 31 dB
Bluetooth Technology lets you seamlessly stream entertainment from your mobile phone and any other Bluetooth enabled device
Integrated microphone lets you make and take phone calls without removing the hearing protection
Cord and antenna-free design lets you move easily with a simple single-button interface allows you to stay focused on the job
30+ hours of battery life per charge. Automatic shut-off feature with low-battery indicator. Built-in rechargeable battery; charging cord included