The JBL Tune 770NC wireless headphones in blue provide a versatile listening experience centered around the signature Pure Bass Sound. These over-ear headphones utilize 40 mm drivers to deliver a frequency response from 20 Hz to 20 kHz, ensuring a balanced audio profile for various music genres. To help you stay focused or aware of your surroundings, they feature Adaptive Noise Cancelling along with Smart Ambient technology, which includes Ambient Aware and Talk Thru modes for seamless transitions between isolated listening and conversations. Connectivity is handled by Bluetooth 5.3, allowing you to pair with two devices simultaneously via a multi-point connection, while a 3.5 mm jack is available for wired use. The battery life is particularly extensive, offering up to 70 hours of playback with noise cancelling off and 44 hours when it is active. If you are in a hurry, a quick five-minute charge provides roughly three hours of listening time, and a full recharge takes about two hours. Designed for portability, the headphones weigh 232 g and feature a flat-folding construction that makes them easy to pack. The lightweight build is complemented by hands-free calling capabilities with Voice Aware, allowing you to hear your own voice clearly during calls. This blue model includes a detachable audio cable and a USB Type-C charging cable.