He also works at the same facility. Sprint customers cannot use it by switching to T-mobile. The sound quality is just as good if not better than my AirPod Pros and Bose earbuds. I strongly recommend it Overall, the size is quite nice for the speakers I am using for. These shoes are light and very comfortable for walking and light running. I dont know how to assess that. I got the blue pair as I like a little color in my life, ive had enough black and white earphones/earbuds to last a lifetime, its nice to get blue or red at times when possible. Fortunately you only have to do it every few years. To be able to hear your music but also hold a conversation is an incredible feature.