JBL will reveal this huge new Bluetooth boombox at IFA 2017 in a few weeks’ time. The speaker, which kind of looks like an ‘80s-style boombox from the future, would be the largest in JBL’s portable range. It weighs 11.6 pounds, is waterproof (against both spills and immersion), and can reportedly last a solid 24 hours without charging thanks to its massive 20,000 mAh battery. So, great for pool parties and trips outdoors.

With that amount of power (and dual USB ports) it can also be used as an energy source to charge your phone and other gadgets. Other features include outdoor and indoor listening modes, and the ability to connect to other JBL speakers over Bluetooth via the company’s Connect+ option.

There’s no exact release date, but it’ll be launched sometime in the fall and retail for £399.99 ($515) in the UK. There’s no word yet on if and when the speaker will be sold in the US.