ZEALOT s8 Premium Stereo Dual-drive Bluetooth Speaker Excellence bass and volume for the music you love. Clear Stereo Sound Enjoy a full-range stereo sound with impressive volume Whether you're partying, working out, or just lounging around the house. Advanced Touch Sensitive Control Technology Easy control and more joy. Booming Bass Powered by four powerful speakers and passive subwoofers to make sure you never miss out on those ultra low frequencies. Over 12-Hour Playtime A 4000mAh lithium-ion battery lets you play up to 100 songs at mid-level volume on a single charge *Playtime varies according to volume level and audio content. Power Bank 5V, 2.1A output, can charge you phones, watches or other devices About Warranty ZEALOT believe in our products. Any questions please feel free to contact the seller, ZEALOT will give you a timely and satisfactory answer.