JBL Tune 670NC On-Ear Noise Cancelling Headphones The JBL Tune 670NC On-Ear Noise Cancelling Headphones deliver JBL Pure Bass Sound and boast up to 70 hours of battery life. These headphones are lightweight and flat-folding, with customizable options available through the free JBL Headphones app. You can easily manage calls and stay aware of your surroundings with VoiceAware, while Adaptive Noise Cancelling allows for distraction-free studying or jamming out. With Ambient Aware and TalkThru, you