Amplify your music, wherever with the JBL XTREME Portable Bluetooth Wireless Speaker in black.Xtra-powerfulUnleash 40 W of combined output power - two visible JBL Bass Radiators in the JBL XTREME Wireless Portable Speaker help produce a sound you can feel.Enjoy added crispness and definition courtesy of two tweeters and two midrange speakers.Outlast adventureRugged, splashproof casing…