HKM-571731 Compact Waterproof Bluetooth Subwoofer Speaker with Radio and Voice Prompt FunctionIntroducing the HKM 571731 Compact Waterproof Bluetooth Subwoofer Speaker, designed for versatile use whether you're at home, outdoors, or on the go. This robust speaker not only delivers impressive sound quality with a frequency response range of 100Hz to 20kHz, but it also incorporates a number of features that enhance its usability in various environments. Key functionalities include: Water resistant and dust proof design, making it an ideal