With surprisingly good audio quality and durability for the price, the best feature is the battery life.  24-Hours of playback puts it into a league of its own.  At a quarter of the price of similar size and sounding speakers, the Anker Soundcore portable Bluetooth speaker is perfect if you just want a simple, straightforward portable speaker.  Even though it’s not waterproof like some of the competition, it’s still built tough with a military-grade chassis and seamless control buttons.