Details The Speakers are in stock; Ship out in 1 day! Different Materials Give Different Sound EffectFeel different rhythm on different materialsWood - Bass is good; rich and sumptuous mid-soundMetal - Strong bass soundPaperboard - The clarity of the sound reduced and it feels like vinyldiscGlass - Clean and transparend soundHollow Wall - Good spacious sound performanceKindly Note - Please use a Bluetooth Phone to connect the speaker; Please use Touch keys of the speaker to control the volume; u