... Description High quality Mini Portable Speaker for PC,Laptop,Mobile phone:USB connecting with PC,LED light Portable USB Mini Speaker for PC,Laptop ... via 3.5mm headphone socket.2. RechargingVia a computer`s USB port port or via compatible DC mains charger, LED light ... : 100Hz-20KHzCharge voltage:4.2VS/N Ratio: 90dBImpedance:8 ohms Portable USB Mini Speaker for PC,Laptop,Mobile phone