The Bosbos Dash is a portable bluetooth speaker with a crisp robotic design and high definition stereo sound. Featuring an output power of 5W, USB/SD input, FM radio, input microphone, KARAOKE function and True Wireless technology. Bosbos Dash True Wireless Stereo technology allows you to pair two audio devices wirelessly, meaning that you can transmit the L channel (left) and the channel R (right) separately for a true stereo experience.