Adaptive Noise Cancelling with Smart Ambient - Adaptive Noise Cancelling means zero distractions when it’s time to focus on your studies—or get your groove on. And if you want to hear the world around you without removing your headphones, Ambient Aware and TalkThru sharpen the sounds of your surroundings or voices. Easily activate these Ambient Sound Control modes through the JBL Headphones app.Bluetooth 5.3 - Wirelessly stream high-quality JBL Pure Bass Sound from your smartphone with the help of the latest Bluetooth technology. Optimize the Bluetoothperformance with the Smart Audio & Video feature in the JBL Headphones app by selecting the Audio (for the best sound quality) or the Video (for an optimal gaming and video output) modes.JBL Pure Bass Sound - JBL Tune 670NC headphones feature renowned JBL Pure Bass sound—the same that powers the most famous music venues all around the world.Up to 70H* battery life with speed charge - For long-lasting fun, listen wirelessly for up to 44 hours and recharge the battery in as little as 2 hours with the convenient Type-C USB cable. A quick 5-minute recharge gives you 3 additional hours of music. *Battery life: BT on / ANC offCustomize your listening experience - Download the free JBL Headphones App to tailor the sound to your taste by choosing one of the pre-set EQ modes or adjusting the EQ curve according to your content, your style, your taste. Voice Prompts in your language guide you through the Tune 670NC’s other features.Hands-free calls with VoiceAware - Easily control your sound and manage your calls from your headphones with the convenient buttons on the ear-cup. Hear your voice while you’re talking, with the help of VoiceAware.Multi-Point connection - Effortlessly switch from one Bluetooth® device to another. Jump from a video on your tablet to a call on your mobile phone, and never miss a moment.Lightweight, comfortable and foldable design - The lightweight materials and soft ear cushions with a padded headband make the headphones comfortable to wear for extended periods. The foldable design makes it convenient to carry them anywhere—anytime you want music