Mini portable speaker Use for:PC,Mobile phone,ipod,ipad,Mp3/Mp4,Laptop, ... ,etc. Color:Black,or as your demands Power: by USB Mini portable speaker: Pictures: Technical specification: Dimensions(LXWXH): 58MM*60MM Net weight ... : 17g Speaker: MAGNETISM PREVENT 40mm 2W/4Ω Power: 2.4 W Frequency ...