Hi, Dear Sir/Madam, It is nice to write to you. This is Raimundo Alves Grandson from Brazil. I do have the customer that is interested your ch amplified speaker SD LED disco light. may I know more information about product such as: Channels, Special Feature, Player Type, do you have any quality assurance certificates? please copy and paste the questions and answers back to me. thanks/RegardsRaimundo Alves NetoRaimundo Alves Grandson Alves Show More