... Low Cost Delivery Mini Speaker, Mini portable speaker , Speaker for USB, SD, MP3, Computer, Mobile Phone!SpecificationItemMultimedia speakerSpecial FeaturePortable, MiniSpeaker4ohm, ... , Mobil, laptop, etc.ColorOptionalRecharge 1. Via a computer's USB port2. Via a compatible DC mains charger Tips: Red ... or in offline status (not connected to a computer USB port).Music Source:* 3.5mm audio LINE-INSimply ...