Bluetooth 5.4 gives robust battery life with rich features bluetooth specification has been upgraded to the new generation 5.4, reducing power consumption and extending battery life. Sound signals are more stable, ensuring usability even in interference heavy environments. It supports higher quality audio for limitless listening options. The headset also supports simultaneous pairing so it can be connected to two devices at the same time. A high capacity battery allowing for all day long playback anytime comes with a high capacity 500mah battery, allowing for an all day long playback, getting you out of power anxiety. Reference battery life numbers noise cancelling turned off with music playback, about 58h noise cancelling turned on with music playback, 35h only noise cancelling turned on, about 50h connected to a phone and idle, about 330h. Supports anc and game modes anytime supports anc active noise cancellation technology, which allows for a good listening and call experience even in noisy environments. No matter if youre out in noisy areas, such as subways or shopping malls, or in areas where you need every last bit of concentration, such as dorms and libraries, just press the anc button and instantly hide in your own little world, away from any distractions. One press the anc button to enable anc mode, and get you out of the interference heavy world. Double press the anc button to turn on the game mode, which reduces audio latency to lower than 60ms, instantly giving you a gaming experience close to that of wired headphones. Retro style with comfortable design for all day wear the ergonomically designed and retractable headband, and 3d flexible adaptive hinges allow heads of different sizes and shapes to be comfortable when worn without pinching. The skin friendly earpads are as soft as clouds. The signature ldquofiio arcrdquo design gives a further sense of quality. A mere 155g of lightweight body is comfortable for all day wear.