Lightness, comfort and good sound. With the JBL Tune 670NC Adaptive Noise Canceling wireless headphones, you have all three. With up to 70 hours of battery life, the JBL Tune 670NC will get you through the week without needing to top up. And if you need a quick charge, five minutes gives you three extra hours of music, or plug in the detachable headphone cable to keep the mood going.