JBL Tune 770NC Adaptive Noise Cancelling Wireless Over-Ear Headphones, Pure Bass Sound, When your music is on, nothing else matters. The JBL Tune 770NC Adaptive Noise Cancelling wireless headphones deliver on that promise all day-and longer, while sparing you unwanted noises. With up to 70 hours of battery life, you'll easily get through a busy week of using them and still have enough JBL Pure Bass Sound to get you through the weekend. And if you do need a quick recharge, 5 minutes gets you an extra 3 hours of music. Lightweight, and flat-folding, the JBL Tune 770NC can also 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. Just choose the color that best suits your vibe, and start having fun.Pump up the bass: JBL Pure Bass uses the same technology as many music venues around the world and is designed to blow your mind with its reverberating, unbelievable bass, getting you hyped for your dayNon-stop grooving: With up to 70 hours of battery life and a handy speed charge feature, your listening potential is endless - with JBL, nothing gets in the way of you and your tunesAn immersive experience: Adaptive Noise Cancelling technology is designed to eliminate any distractions but also keep you in touch with your surroundings - create your soundtrack during scenic journeysConvenient: Its foldable design makes the Tune 770NC portable and easy to store, and it's also compatible with Bluetooth 5.3 and a multi-point connection for effortless switching between devices