The Pyle Surf Sound PBTW20BL is a versatile 2-in-1 Bluetooth waterproof stereo speaker with a built-in microphone for hands-free calling. Designed for use in rugged environments, this speaker meets IPX7 waterproof and dustproof standards, making it perfect for use at the pool, beach, or even in the shower. Featuring Bluetooth V2.1 technology, it connects wirelessly to smartphones, MP3 players, and tablets, and also includes an Aux input for direct connection via the 3.5mm cable. With up to 15 hours of playtime, a 10-meter Bluetooth range, and easy-to-use touch button controls, this speaker delivers high-quality sound and bass while allowing you to manage your calls and music seamlessly.