BACAI Keyless Entry Flip Folding Key Case Shell Fob for Ford Focus Escape Expedition Explorer Fusion Mustang Taurus Mercury This item isn't a remote key and it is just a remote key shell case replacement Best replacement for a key with broken buttons or worn key case NO interior (remote / electronics / transponder chips) unit inside Good quality, durable to use Take the internal electronics(include immobilizer/transponder chip) from original remote and place them to our key shell!