The Pro 2 V5.2 by Huilian stands as the pinnacle of the Pro Gen2 series, offering unparalleled sound quality and a 1:1 hinge design for a superior user experience. This latest model is equipped with the latest Adaptive Audio Feature, enhancing your listening experience to match your environment. With an impressive 5-6 hours of battery life, it ensures long-lasting performance for your daily needs. At its core, the Huilian H2S Ultra chipset powers a variety of advanced features, making the Pro 2 V5.2 a top choice for anyone seeking the best in audio technology.