Review on Ultimate Portable Bluetooth Speaker: Wireless, Waterproof & Subwoofer Features - Perfect for Showers, Outdoor Activities, and Hands-Free Calls! by Eric Webbie

Zero stars, lasted about a month and stopped charging. Tried swapping the cable (used a couple of cables I had on hand) etc. and never worked. The battery must be discharged. Although I loved it when it worked, it didn't last. Don't waste money. Should have worked much, much longer. Cyst Support Key on Revain does not accept my phone number for product support. Throw away this waste of money!