[Loud Powerful Sound]: With its dual tweeters, dual subwoofer, dual passive radiators and EX-BASS technology, this Bluetooth speaker deliver a 50W(70W Peak) powerful full-range sound, releases with greater clarity and zero distortion. Unique bass enhancement technology, press the EX-BASS button, it can produce a deeper, thicker and more elastic bass. Upgraded speakers, More Power, Better sound. It has the sound quality and capacity of a large speaker and the portability of a small speaker. [10000MAH Built-in Batteries & 30H Playtime]: This portable bluetooth speaker built-in 10000m Ah rechargeable battery can up to 30 hours of playtime at 50% volume. No matter what outdoor activities you participate in, this speaker covered with its reliable and long-lasting battery performance. Plus, its built-in power bank charges other devices in a pinch. You can also play music from your PC, TV, and other non-Bluetooth devices via the 3.5mm audio jack.