Improved Sound: Dual 5W drivers and bass-boosting passive radiator produce clear and powerful room-filling sound. Great for use with your favorite soundtracks for parties or outdoor entertainment Long Battery Life: 5200mAh battery supports up to 30-hour playtime for all-day play with power to spare or multiple extended listening sessions. Just 1 hour of charge gives you 5 hours of music Tough 'Tank' Construction: Water-resistant shell protects against extreme weather. Silicone housing provides shock and drop resistance Compact & Portable Design: Despite powerful performance, this speaker is a surprisingly light 635g / 1.4 pounds in weight. Built-in 1/4"-20 standard screw thread and hanging point are handy for outdoor adventures Package Contents: AUKEY SK-M12 SoundTank Wireless Speaker, Micro-USB Cable, 3.5mm Audio Cable, Reset Pin, User Manual, 45-Day Money Back Guarantee and 24-Month Product Replacement Warranty Card.