https://www.techradar.com/news/should-i-buy-the-bang-and-olufsen-beolit-17-bluetooth-speaker

The bottom line: The Bang & Olufsen Beolit 17 is one of the best portable speakers you can buy right now. Its lunchbox-like design is easy to transport, especially if you’re after something to play music during a summer BBQ, rather than a holiday speaker. B&O has nailed just about every aspect, from design and sound to the quality of materials used in its manufacture. The Beolit 17 is a luxury speaker without too scary a price. It uses Bluetooth rather than Wi-Fi, perfect if it will be moved from room to room, or even house to house. And yet it still has audio quality strong enough to act as your main Hi-Fi. 

Pros: Portable, fantastic 24-hour battery life, excellent sound