BACAI Remote Key Blank Shell Case Keyless Fob Pad Cover For Hyundai Accent XG350 XG300 Sonata 3 Buttons Best replacement for a key with broken buttons or worn key case. Take the internal electronics(include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready. This item isn't a remote,it is just a remote key shell case replacement. There is NO interior (remote/electronics/transponder chip)unit inside. Please compare with pictures before purchase, make sure your key is exactly as same as pic shows!!