Lightness, comfort, and great sound. With the JBL Tune 670NC Adaptive Noise Cancelling wireless headphones, you've got all three. With up to 70 hours of battery life, the JBL Tune 670NC will get you through your week, with no need of a top-up. And if you do need a quick recharge, 5 minutes gets you an extra 3 hours of music, or just plug in the detachable headphone cable to keep your flow going. The JBL Tune 670NC headphones connect with two Bluetooth devices simultaneously, so you'll never miss a call while watching a movie on your tablet. With the free JBL Headphones app, you can tailor the sound to suit your taste. And voice prompts in your language will guide you through the features. Manage your calls and your voice assistant hassle-free right from your phone, and use VoiceAware to hear yourself when you're speaking.