The sound of Base is characterized by a sense of very thick density, while maintaining a sense of low volume, which greatly improves the high-frequency lines and texture, and both ends of the expanding , three-band equalizer; in large dynamic has excellent of control, and the sound field open, rich finish, as if the music has injected vitality, alive! This upgrade is definitely more important than the change of signal lines or power lines. Improve sound quality Base size: 39mm (diameter) x 13mm (height) Colour: Picture color Material: Stainless steel + graphite Package Contents: 4 * Speaker Base Pad Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.