ZHAOCAI Water Speakers Black Music Dancing Water Show Fountain Speaker/Water Dancing Speaker/Water Spray Speaker/Computer Speakers / Mp3 Speakers, Black 5 v usb external power supply, the instantaneous maximum current is less than 1. 2a Adopt 3. 5 audio plug. 2. 1 sound channel with anti - breaking function 3w speaker 2, about stereo Lighting effect: The main sub speaker each piece, highlighting the red and blue green yellow light