Your music, noise free. When your music is on, nothing else matters. JBL by Harman Tune 770NC Bluetooth Over-Ear Adaptive Noise-Cancelling Headphones deliver on that promise all day and longer while sparing you the unwanted noises. With up to 70 hours of battery life, these JBL headphones easily get you through a busy week of using them and still have enough JBL Pure Bass Sound for the weekend. If you need a quick recharge, 5 minutes of charge time gets you an extra 3 hours of music. Lightweight and flat-folding, JBL Tune 770NC headphones can also connect with 2 Bluetooth devices simultaneously, so you'll never miss a call while watching a movie on your tablet. The free JBL Headphones app lets you tailor the sound to suit your precise preferences. 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. Start having fun and stop having interruptions when you listen with JBL 770NC Adaptive Noise-Canceling Headphones.Manufacturer model #: JBLT770NCBLKAM. Up to 70 hours of battery life JBL Pure Bass Sound 5 minutes of charge time gets you an extra 3 hours of music Fold-flat design JBL Headphones app to fine-tune sound Manage calls and voice assistant VoiceAware to hear yourself when you're speaking