The JBL Live 770NC headphones feature a comfortable over-ear headband design and deliver a powerful JBL Signature Sound. True Adaptive Noise Cancelling with Smart Ambient technology eliminates distractions while you're in the zone. You can even converse without taking off your headphones if you wish to maintain an open ear to the outside world. To play your favorite playlist, text a friend, check the weather, and much more, simply use a hotword or tap the earcup to access your preferred voice assistant. You can stream music for 65 hours (50 hours if you have BT+ANC enabled). More than you need? You can get an additional four hours with a five-minute speed charge. Two Bluetooth® devices can be connected to the JBL Live 770NC at once, so