... Portable Speaker for PC,Laptop,Mobile phone:USB connecting with PC,LED light Portable USB Mini Speaker for PC,Laptop,Mobile phone ... via 3.5mm headphone socket.2. RechargingVia a computer`s USB port port or via compatible DC mains charger, LED light ... ,it looks more pretty.Power Source: Built-in rechargeable Lithium-ion battery.Output:1WFrequency: 100Hz-20KHzCharge voltage:4.2VS/N Ratio ...