It's designed really well constructed and very durable it got a hard plastic in front of the speaker and has a rubberized texture all around it's accented with metal brackets that make this speaker shock proof, clearly it's a speaker designed for rugged used. Also a certified IP X5 splash proof and if you're into beach, swimming, picnic, camping, etc this bluetooth speaker is the right choice for you. Controls in this are so easy and it's located at the top which you'll find there the power button, volume, next & previous track, phone speaker to make calls and also to take phone calls with it which make this features so good. Pairing in vtin punker with the phone is absolutely flawlessy and super fast the connection is very stable and no obstruction, music can be played back from a distance up to 10 meters. The battery life is pretty good which last up to 27 hours which you can definitely listen to a lot of music even at max volume for many hours before the battery needs to be re-charged.
Sound quality in this device is really good for it's price whether it's a phone calls, listening to music or watching movies, bass is present, no noticeable distortion.