Metal case portable mini speaker FM, high-fidelity, low-power; for MP3,notebook,cellphone;last for ... Mini speaker TypePassive UseHome Theatre, Portable Audio Player, Mobile Phone, Computer, Outdoor Channels1 Special FeatureWireless, Portable, Mini Place of OriginGuangdong, ... gold,light green MaterialStainless steel ChargingLi-batteries or USB power Product sizeD60mm *H50mm NOTE:We have two versions ...