Bluetooth or wireless speakers have come a huge way in the past few years, and today you can find these battery-powered speakers in a variety of sizes. For outdoor use, since you’ll have to compete with wind, huge spaces, non-ideal acoustics, and other noises, you’ll want a pretty big and powerful speaker. But there are lots of wireless options for that, and they have better sound quality than you’d expect. One other benefit of this style of speaker? You can simply pick it up and bring it inside when you’re ready—with no loss of tunes.