Price Match Guarantee JBL Live 670NC Wireless On-Ear Noise Cancelling Headphones JBL Live 670NC 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 hotword or a tap on the earcup. You'll enjoy 65 hours (50 hours with BT+TANC on) of music streaming-and a 5-minute speed charge gives you another four