Connects to phone via Bluetooth for wireless music streaming and phone calls. Offers hearing protection and excellent sound quality, with built-in microphone for making phone calls. Boom-microphone available separately for clearer speech quality in high noise. Active listening microphones in each ear cup ensure excellent directional hearing, offer natural sound and enable conversations, warning signals and other important information to be heard without compromising protection. Features quick and easy helmet-mounting, push button controls, USB charging and voice assistant support. Bluetooth Connection 80 Hours Battery Run Time 4Hours Charge Time Level Dependent Active Listening Waterproof to IPX4 Bluetooth Connection 80 Hours Battery Run Time 4Hours Charge Time Level Dependent Active Listening Waterproof to IPX4