Wireless neckband earphones are powered by internal batteries that provide hours of continuous playback on a single charge. The battery life varies depending on factors such as usage patterns, volume levels, and battery capacity. Some models also feature quick charging capabilities for added convenience.Some neckband earphones feature noise isolation or active noise cancellation technology, which helps block out ambient noise and provide a more immersive listening experience. This can be particularly useful in noisy environments such as public transportation or crowded spaces.