So a guy at work brought his blue tooth speaker to work. I was so impressed with it that I bought two for myself. Blue tooth has been around for ages, but I've never really used it until now. The technology has come a long way. Rather than fiddle with DVDs and a huge stereo system, I can open an app on my phone and stream music to a speaker and hear it anywhere I want. Totally amazing. Having watched the evolution of electronics for several decades, I can only imagine what will come in the near future. You youngsters have an interesting time ahead of you.