The JBL Charge 3 Portable Bluetooth Stereo Speaker features dual 1.97" drivers and twin passive radiators for deep, accurate bass and up to 20W of audio power. It supports Bluetooth wireless functionality, so you can stream music wirelessly from up to 3 separate Bluetooth-enabled devices. Additionally, user can connect the Charge 3 to other JBL Connect-enabled speakers for an even bigger sound. The Charge 3's integrated 6000mAh lithium-ion polymer battery lasts up to 20 hours on a full charge, and lets user charge other portable devices via the USB port. The Charge 3 is equipped with a built-in microphone, so user can make and receive hands-free speakerphone calls. The Charge 3 also features an IPX7 waterproof design, so there's no more worrying about rain or spills—user can even submerge it in water.