It may be small, but that won’t stop the Sony SRS-XB43 EXTRA BASS Portable Bluetooth Speaker from creating a party. In fact, this wireless speaker ensures you hear all the treble notes alongside deep bass beats. That’s because it offers two passive radiators that work with its two-way speaker setup. Combining a woofer that handles low- and mid-range frequencies with a tweeter for high frequencies, it ensures you don’t miss any of the lowest tones. Rated IP67 for both waterproof..