HD ACOUSTIC SOUND: Implemented with two 8W total acoustic drivers, the Mpow Bluetooth speaker produces a wide audio spectrum. Experience your music in high definition audio and clarity at any listening level.</br>EXTRA-LARGE CAPACITY POWER BANK: Built-in 5200mAh rechargeable battery allows 22 hours playing time and charge your cell phones when in urgent need in outdoor. Enjoy a whole day outgoing on a single charge.</br>ULTRA PORTABLE: Well-protected in rugged iron shell and IPX5 rating material, this speaker is shockproof and waterproof, perfect for outdoor activities and on-the-go listening. Comes with a pouch and hand strap, it¡¯s very convenient to carry this speaker everywhere.</br>BLUETOOTH 4.0 CONNECTIVITY: Connect over Bluetooth in just a few seconds to pair with your device up to 33 unobstructed feet away, enables you to enjoy wireless sound.</br>HANDS-FREE CALLING: Built-in mic for hands-free speakerphone cell phone calls over Bluetooth from Smartphones and iPhones.</br></br>Product Description</br></br><p><b>Enjoy Music On the Go!</b><br> <b>Super Large 5200 mAh Power Bank </b><br> With 5200mAh built-in battery, this Mpow Bluetooth speaker can be used as your emergency power bank for your phone when you¡¯re on outdoor activities. You can use most USB power sources, like a laptop or car charger.</p> <p><b>Handy and Portable </b><br> Portable and waterproof features guarantee better user experience when playing music in outdoor hiking/biking. Additionally, the speaker comes with a pouch and hand strap, it¡¯s very convenient to carry this speaker everywhere. Let you listen to your music, videos or games wherever you are. </p> <p><b>Powerful Performance</b><br> Two 8W total acoustic drivers produce high definition audio and clarity while he newly designed passive radiator could provide strong bass without distortion even at highest volume. Bring your music to life wherever you want it, with no wires to get in the way. </p> <p><b>Hands-Free Calling</b><br> Built-in microphone, its hands-free calling function provides you worry free about picking up your phone when you are on outdoor sporting. </p> <p><b>What You Will Get</b><br> 1 * USB Cord<br> 1 * Audio Cable<br> 1 * Instruction Book<br> 1 * Nylon Bag<br> 1 * Nylon Rope</p> <p><b>Warranty</b><br> Every Mpow product includes a 45-day money back & 18-month worry-free guarantee! </p></br><br/>http://www.amazon.com/gp/product/B019T1JKBK