This ultra-portable and lightweight AYL Mini Speaker delivers high-quality sound despite its compact size, weighing only 3 ounces. It offers a 3-watt output for surprisingly loud volume and exceptional clarity. The built-in amplifier and high-fidelity audio ensure an impressive listening experience. The rechargeable lithium battery provides up to 10 hours of continuous playback at medium volume. The speaker is compatible with all audio devices featuring a 3.5mm audio jack, including iPhone, iPad, iPod, MP3 players, laptops, and PCs. It charges via USB and comes with a 3-year manufacturer warranty.