The Brane X smart speaker provides exceptional sound for all of your go-to playlists. This powerful device includes a built-in subwoofer along with four class-D amplifiers to create a soundstage like no other. If you want to adjust the bass levels, simply use the designated bass button at the top of the Brane X smart speaker before listening to your music just how you like. To further guarantee high-quality playback, two midrange drivers and two tweeters are also included. The 72-watt-hour battery means you’ll have up to 12 hours of uninterrupted playtime—perfect for gatherings that will last all day long. When it’s time for a recharge, three hours is all you need before the device is ready to keep the positive energy going.