The BRUNO Volume Knob Speaker (Model BDE060) is a portable, waterproof Bluetooth speaker featuring a vintage volume-knob design. It is equipped with features suited for daily use, including an IPX4 waterproof rating that allows for use in bathrooms or kitchens. It features a built-in magnetic base for attachment to metal surfaces, such as refrigerators, and supports TWS (True Wireless Stereo) functionality, enabling two speakers to connect for stereo sound. Additionally, it includes a built-in microphone for hands-free calls and offers analog-style volume control via a rotary knob.