The BRAVEN BALANCE (Black/Black/Black) is a wireless Bluetooth® speaker with rich, warm bass optimization technology wrapped in a waterproof exterior. Designed for portability, toss the BALANCE in a backpack, sports tote or day bag to stream your favorite music anywhere. The BALANCE plays for an impressive 18 hours and features Boost Mode, to instantly surge to max volume. Complete with built-in speakerphone and a 4000mAh internal battery to charge your smartphone or tablet, Braven's BALANCE is the crossover speaker you've been waiting for.