WHAT DOES ROLLING BLUETOOTH SPEAKER WITH MICROPHONE MEAN?

We spend hrs about the course of testing listening to music in different environments to make absolutely sure we have a good photo on the speaker's functionality when we pen our in-depth, informative reviews.JBL Authentics 300: The mid-model in JBL's a few-robust retro-looking Authentics speaker series, the 300 proved straightforward to transport a