Outdoor-Proof Speaker: Portable design with IPX7 waterproof protection to safeguard against splashes, waves, and water vapor. Get incredible sounds at home, on camping trips, or for outdoor adventures. 24H Non-Stop Music: With Anker's world-renowned power management technology and a 5,200mAh Li-ion battery, the soundcore 2 speaker delivers a full day of great sound. Powerful Sound: The speaker features 12W power with enhanced bass from dual neodymium drivers. An advanced digital signal processor ensures pounding bass and zero distortion at any volume.