This Yayusi K8 portable speaker is a perfect addition to your audio collection. With its oval shape and black metal material, it is sleek and stylish. It boasts an impressive battery capacity of 3000mAh and can connect wirelessly via Bluetooth or wired through an AUX or USB connection. The speaker comes with Dolby Digital Plus surround sound format and features such as touch control, waterproof, pulse and flicker effect, illuminating it. This portable speaker is water-resistant and has a manufacturer warranty of one year. It is a great choice for those who love music on the go.