Enjoy the real bass: With BassUp technology of Anker's proprietary technology, you can enjoy your favorite music with a powerful bass, regardless of the volume level. With one button, the usual sound changes. <br> • Excellent sound: With dual drivers and two subwoofers, you can enjoy the powerful Hi-Fi sound of 20W. The powerful sound with enhanced bass is perfect for playing podcasts and lively parties. <br> • Music playback and recharging: Anker's battery technology allows continuous playback of up to 12 hours (about 250 songs). You can also use it as a mobile battery to charge your USB device. * The remaining battery power of the speaker itself can also be checked from the iPhone or iPad which is paired with Bluetooth (* iOS 6 ~ iOS 10.2 devices only). <br> • Home, anywhere: blend into the interior of your room with a classic and minimalist design. Easy to carry and waterproof performance of IPX 5, you can enjoy your favorite music not only in the house anywhere. <br> • Package Contents: Anker SoundCore Boost, Micro USB Cable, Instruction Manual