The external passive vibration element helps to repeat the bass in the lowest frequency range.Distortion-free at maximum volume; room filling sound, perfect for home, dorm room, kitchen, bathroom, car, parties; streaming music or internet radio services from your Smartphone or audio device.The speaker box uses high quality, high magnetic horn, with sound cavity and intelligent noise reduction design, whether the bass is high or low, can restore the real sound.The speaker has a variety of terminal devices, such as tablet computer, notebook computer, desktop computer, MP4, TV, game machine, mobile phone and so on. It can be connected by Bluetooth device, and it also supports TF card, plug and play.Configuration 4.0 Bluetooth chip, fast transmission, low power consumption, barrier free effect.