The JBL Live 770NC headphones deliver powerful JBL Signature Sound in a comfortable over-ear headband style. Featuring True Adaptive Noise Cancelling with Smart Ambient technology, these headphones keep you free from distractions or aware of your surroundings. Enjoy up to 65 hours of music streaming (50 hours with Bluetooth and Active Noise Cancelling enabled). A 5-minute speed charge provides an additional 4 hours of playback. The headphones can connect to two Bluetooth devices simultaneously. They are equipped with 40 mm drivers for immersive JBL Spatial Sound and dynamic JBL Signature Sound. The noise-cancelling technology uses four sound-sensing microphones, and Smart Ambience keeps you aware of your surroundings. Additional features include auto play and pause when headphones are removed, voice assistant compatibility, and 2 beamforming microphones for high-quality calls. The package includes the JBL Live 770 NC headphones, a USB-C charging cable, a detachable audio cable, warranty/warning information, and a quick start guide.