Bluetooth is the go-to option for anyone looking for a (usually) cheap and easy wireless speaker. Bluetooth speakers are ideal for households that aren't strictly Apple-centric, since they work with all nearly all smart phones (Android, Windows Phone, BlackBerry) and many Android tablets, as well as all iPhones, iPods, and all iPod Touch models (except for the first-gen Touch). Bluetooth speakers are designed with rechargeable batteries, so they can be moved from room to room with ease. Travel models are even smaller, and often include speakerphone functionality as well. We've included the best of all such models below.