... , support (5V/1A) charger, built-in high capacity battery, Support FM: 87.5MHZ-108MHZ Built-in battery, LINE IN interface can ... , Laptop and other sound sources. Remote controller can select; Vibration speaker Specification 1, Power Input 23W(RMS2, Frequency Respond 30Hz-20Hz3 ... ,Speaker Unit 40mm4Ω2W×24, Rated Voltag 3.7V/85mA5,Signal ...