Improve the sound quality of your smartphone with the Symphonica Smartphone Acoustic Horn Speaker. Made from sustainable rubberwood, this speaker doesn’t require any electricity or batteries. Thanks to its clever design, the Acoustic Horn Speaker enhances the sound from your existing smartphone speaker. Likewise, it uses acoustic amplification to fill the room with sound. In fact, the Acoustic Horn Speaker can almost double the volume without using any additional volume or battery from your phone. Featuring an elegant and natural design, the speaker has a handcrafted natural wood finish. Furthermore, you can choose between Lightning, Micro USB and USB-C connection options. Now you can amplify and improve your smartphone sound in an eco-friendly way that looks as good as it sounds.