The Antiga d28 speaker is a portable audio device that needs to be connected to a power source in order to function properly, and is not designed to have a built-in battery or electric cell. This means that it needs to be connected to a power source before use to ensure proper functioning.
The Konka d28 speaker features high power, heavy bass and square dance audio for outdoor use. It is also equipped with wireless microphone and dual microphone function, which is convenient for users to perform or give speeches and other activities. In addition, the Konka d28 speaker also features a Bluetooth trolley bar and portable design, making it easy to carry and move around.