JBL Signature Sound and surround sound Bluetooth 5.3 with LE audio supported True Adaptive Noise Cancelling with Smart Ambient Auto Play and Pause Seamless connectivity with any device Comfort-fit fabric headband JBL Live 675NC headphones deliver powerful JBL Signature Sound in a comfortable On-Ear headband style. True Adaptive Noise Cancelling with Smart Ambient technology lets you decide which sounds to keep out and let in. Access your preferred voice assistant with either a hot-word or a tap on the earcup. You’ll enjoy up to 65 hours (50 hours with BT+TANC on) of music streaming—and a 5-minute speed charge gives you another four hours.