So this is the Earfun UBOOM X, is a large portable Bluetooth speaker thats easy enough to take on the go with you but it also packs a very big punch. The Earfun UBOOM X also has extra features like a built in light feature and it also has a USB C port so that you can charge your own devices… but best of all, the Earfun UBOOM X is surprisingly affordable for its size and price.