Portable Speaker Free To Go Anyplace. Easy to take Vtin portable bluetooth speaker to everywhere like going for a walking driving camping enjoy beach time or pool time with its hand size design and a “D” ring make it possible to handy to attach the portable wireless speaker to a backpack or even a lawn chair. The robust construction ensure durability for a long time use of most outdoor activities includes go for golf a trip get together for a picnic time and so on.