Designed to neatly clip onto your shirt, backpack, pocket, or anything else in close proximity, the Boom Bit Speaker by Polk Audio is a nifty little speaker that's incredibly portable whether you're engaging in outdoor adventures, household tasks, and daily activities. The 35-millimeter driver delivers surprisingly robust sound from such a tiny speaker. Bluetooth capability pairs with your favorite smartphones, tablets, and computers for wireless listening. There's even a built-in speakerphone for taking hands-free calls when you're driving or immersed in activity. And because it's meant for life on the go, the built-in USB stick plugs into computer ports and USB chargers for quickly powering this speaker up.