Portable Bluetooth speakers are one of the easiest and most cost-efficient ways to wirelessly stream your favorite music, podcasts, and internet radio from any smartphone, tablet, or laptop. These compact speakers include a built-in rechargeable battery that can usually produce room-filling sound for several hours. Bluetooth typically covers a 15 to 30-ft area. While not a substitute for a whole-home audio setup, some Bluetooth speakers can be paired together to create a bigger sound. Many portable Bluetooth speakers are waterproof or water resistant so you can use them by the pool or in the shower without worry.