Bluetooth with carrying case built in microphone 12hr playback time noise cancellation enhanced bass. Built in microphone, high-quality built-in microphone paired with bluetooth 5.0 gives you convenient hands free calling on a stable bluetooth connection with any compatible bluetooth device, no strings attached. Impressively soft ear cups, feel comfortable all day listening wire free with these lightweight wireless headphones. With an adjustable padded headband and impressively soft protein leather ear cups that swivel up to 90 degrees, you can listen all day long pain free. 12 hours playback time, these wireless headphones utilize the newest form of bluetooth v5.0 to reduce energy usage and allow for up to 12 hours of playback time on a 2 hour charge. Perfect for long airplane rides, and travel. Passive noise cancellation, get crisp clear sounds with the enhanced passive noise cancellation so that you don't miss a beat.