Feature:1. Light Weight: The nice advantage of this Bluetooth speaker is that it is light in weight and can be carried around and stored conveniently.2. Suitable: Our portable speaker is suitable for electronic wind instrument, not compatible with electric guitars, electric basses, etc.3. Rapid Connection Speed: Portable speaker has a fast connection speed, can easily play accompaniment, long transmission distance and stable signal.4. High Restoration: Full range speaker, the listener can feel every note, all round interpretation of stereo sound, highly restoration origin sound quality.5. Metal Material: Our portable speaker is made of metal materials, exquisite craftsmanship, black appearance is very fashionable, suitable as a gift for music enthusiasts.Specification:Item Type: SpeakerMaterial: MetalColor: BlackBattery Required: Li battery x 1 850mAh (Shipping with internal battery).Package List:1 x Speaker1 x Connection Cable1 x Adaptor