The quality of a telephone conversation is poor. I will finish installing, despite the crack, through my own research and effort, but I wont recommend this product manufacturer. They survived many long hikes in RMNP, Carlsbad, Arches and Cibola NF. I needed another set of ear buds, where i love black and these had some really impressive specs and had to give them a try. all work really well, sensitivity and response is great. Nach nun 5 Jahren mussten meine Bose Kopfhörer (damals 320?) mit Kabelbindung weichen. com photo for this shoe erroneously showed NO label present, which misleads the customer (and I reported that fact). This was the closest design and build of shoe to the Celeste shoe. The battery life is quite enough for half day trip. Its the best thing.