Mini portable Speaker 1. OEM & ODM Services 2. CE, ROHS, FCC 3. Good Sound Quality 4. Prompt & Low Cost Delivery Mini Speaker, Mini portable speaker , Speaker for USB, SD, MP3, Computer, Mobile Phone!SpecificationItemMultimedia speakerSpecial FeaturePortable, MiniSpeaker4ohm, diameter:40mmLine Input3.5 stereo audio earphoneWorking Timeabout 10 Hours (medium volume, random music) Li Battery ...