With the remote control you can remote it optionally. Built-in integrate block, as power amplifier, which is high-quality and full protection he acoustics is perfect and high protective ability. The transformer is saving-power. And it can switch large of capacity and make sure the powerful bass. Built-in 2200mAh lithium battery 2.5-Hour working time. With the anti-magnetic design.The speaker can stay beside the computer and TV without interference Elasticity and powerfulness make the music express better. Use the unique gas magnetic field simulation technology.The acoustics is sift, natural and elasticity.