The JBL Xtreme 2 portable Bluetooth speaker accommodates four active transducers and two visible bass radiators delivering powerful stereo sound. The high-performance rechargeable battery enables a runtime of up to 15 hours and also allows USB charging of devices. As the speaker is waterproof, it is also suitable for outdoor use, particularly on the beach or at a swimming pool. More than 100 speakers can be wirelessly linked via JBL-Connect+ so as to provide strong sound, for instance at a party.