It just doesnt have midrange strength, the pass is a bit feeble and vocals sound raspy. They ended up sending me an entire new pair for free and the bluetooth works and Im more than happy and grateful for the quality of the headphones and customer service. Meine 2 jährige liebe ihre Glitzer Blinke Schuhe. Unfortunately, Plantronics just doesnt seem to be manufacturing quality products the way that they used to. 99 compared to the three digit price commanded by the name brand ones. There are holes in the top layer on the toe of the shoe now. Silicone material, used it for my keychain. (Unfortunately thats the downside of buying online. Given the obvious quality of construction,I am certain I will enjoy them for a very long time. I?m not sure how that?s possible bc every pair of Crocs except for the special fabrics are literally the slippery-iest material on earth for sweaty feet, and these flip flops are no exception.