With this accessory speaker, you can add a second channel to your AudioXperts EVA SPS300 Bluetooth® powered speaker and enjoy true stereo sound. Like the SPS300, it's made with more than 60% of this accessory speaker is made from sustainable materials. The internal cabinet parts are made from sturdy plant starch bio-plastic. The cabinet's covering is natural woven wool, accented with bamboo. And the remote is encased in bamboo instead of plastic. The PS200 features a single 4" full-range speaker driven by a powerful 15-watt amplifier.