The BRAVEN BALANCE 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 a full power outdoor setting, ideal for large areas. Complete with built-in speakerphone and a 4000mAh internal battery to charge your smartphone, BRAVEN's BALANCE is the crossover speaker you've been waiting for.