Stunning Stereo Sound. Implemented with 20W total acoustic drivers and advanced bass enhancement technology. In the same price range the Big MagicBox is the most competitive speaker in the market that is offering exceptional sound quality.</br>Built-in 4000mA Rechargeable Battery for up to 12 hours of playtime. Built-in microphone for hands-free speaker phone calling Easy to pair - No code/pin needed.</br>Equipped with the advanced Bluetooth 4.0 technology compatible with all Bluetooth-enabled devices (Bluetooth V2.1 and over). Plays all Audio devices through 3.5mm Aux in Jack.</br>Fashion & portable design with compact Size. Easily to carry with only 15 ounces.</br>Two highly powerful 52mm total 20W acoustic drivers and ultra-small size produce a wide audio spectrum. The dedicated bass port could provide strong bass without distortion even at highest volume.</br></br>Product Description</br></br><b> New Features for the Upgraded Version Since 05/06/2016 </b> <br /> <br /> - Solved the battery charging issue. Any customer still having issue for the original Big MagicBox could contact our customer service and ask for a replacement. <br />- Optimized the Bass port for better bass and sound quality. <br /> - Upgraded to 4000mA battery and improved playing time up to 12 hours. <br /> <br /> <b>DKnight Big MagicBox Bluetooth Speaker</b> <br> <br> The Big DKnight MagicBox Bluetooth speaker offers great quality sound with the latest Bluetooth 4.0 technology. It features two highly powerful 52mm total 20W acoustic drivers for excellent sound. With the ultra-compact size and the soft touch rubber design?? it can be easily fitted into a backpack?? suitcase?? or a travel bag. The built-in 4000 mAh rechargeable battery enables 12 hours of playtime on a single charge. This speaker is strong enough to fill up a kitchen?? living room?? or classroom. It is ideal for personal usage?? indoor party or outdoor BBQ or picnic with friends and family. <br