The JBL Tune 660NC headphones are on-ear, closed-back style, which generally offer good noise isolation. These headphones feature both wireless and wired connectivity, giving you flexibility in how you use them. They come at a lower midrange price and are equipped with active noise cancelling (ANC), enhancing listening experiences in noisier environments like air travel. They have a decent build quality and built-in controls for ease of use. The battery life is impressive, providing up to 42 hours of typical use, and they also come with a built-in microphone. The sound quality of the JBL Tune 660NC is considered fair, and they support AAC codec which is good for Apple device users. They are sweatproof, making them suitable for light exercise, but they do not perform well for calls and meetings or gaming, due to the fair mic quality and the potential for latency issues. A folding design and a small headphone carry size contribute to their portability, but without an accompanying app, there's no equalizer or control customization. If you need a pair of ANC headphones for listening to music during travel or commuting at a lower midrange price, these could serve you well, but for tasks requiring clear voice transmission or low latency, you might consider other options. Give Feedback