Compact and Powerful Super-portable Bluetooth speaker delivers powerful sound and robust bass through a 5W audio driver and passive subwoofer. Long Battery Life Anker battery technology supplies 15 hours of continuous playtime on a single charge Waterproof(IPX7) IPX7 means the product is suitable when splashes, rain or snow, showering, and incidental exposure to water of up to 1 meter for up to 30 minutes.