ECsave Flip Remote Key Shell fit for Mercedes Benz 3 Button Switch Blade Fob ML S C This is a brand new remote key case for you to replace your worn or broken case. All you need to do is to move the internal components from your old remote to our new case. This is an after market replacement key case. Please make sure the key case is compatiable before purchase. NO interior (remote / electronics / transponder chips / battery) unit inside.