Still work great. I have tried this like 20 times already and not even had 1 minute of proper sound from both earbuds. After using these, I began to question the quality of the sound that surrounds us in it’s most unrestrained, rawest and freest form. 📦 UNBOXING: El packaging es muy elegante y la experiencia al recibirlos y hacer el unboxing es muy agradable. They look cheap,but they are pretty comfortable as far as I can tell after wearing it around the room. I’m giving 5 stars because these things were a snap to install. I loved the WI C400 earphones when I got them in May and they had decent sound quality and excellent battery life. I have only registered to the companys website. I have somewhat narrow feet and somewhat high arches, but these shoes fit me perfectly and felt totally comfortable the whole night. There were some quality problems---three of the screws that hold in the shoe rack didnt all tighten.