Experience exceptional sound quality from the UB+ dB1 DOUBLEBASS spherical speaker, equipped with a 4.5″ woofer, a 28 mm tweeter, and a pair of 5.2″ passive radiators producing symmetrical oscillation, providing a wide frequency response, Bluetooth 5.3, and waterproof exterior with 2 discreet attachment points Rich Bass, Crystal Clear Sound - Enjoy your favorite tunes with your favorite drink using the dB1 doubleBASS portable speaker, designed to enhance the experience with its innovative technology and fair value pricing Quality Sound Comes First - Experience the full range of sound where deep bass notes complement crystal-clear audio details, creating a magical and dramatic listening experience Jazz Up the Mood - Experience the intricate details and balanced spectrum of your favorite tunes featuring a 4.5" woofer, 35mm voice coil, silk tweeter, and a 90mm magnet The doubleBASS - Implementation of larger passive radiators, resulting in symmetrical oscillation and increased internal pressure for a deep, strong bass that minimizes distortion and enhances audio quality True Wireless System - Breaks traditional boundaries with wireless connectivity, sleek design, and the ability to link with another unit for an immersive listening experience; it also allows connection with up to 8 UB+ units to amplify the music 1 Year Local Warranty UB+ UB+ DB1 DoubleBass Powerful Hi-fi Bluetooth Speaker, Black