This portable bluetooth speaker is amazing. It is very sturdy and durable. Waterproof so it can go anywhere, boat, shop, in the car, just about anywhere you might need a speaker. It has a built in mic and a usb charging port. All the buttons work very well and it is very easy to set up and start using. We were impressed at how heavy it was, this is not a little speaker by any means. It is really cool to have around. Sounds great.