This OEM Mercedes-Benz keyless entry remote key fob, model IYZDC11, is in pristine condition and is a genuine product from the manufacturer. It is designed specifically for Mercedes-Benz vehicles and operates on a frequency of 315 MHz. This remote key fob is a single unit and is one of the parts needed for the remote entry system of the vehicle. It is sold without any warranty, but it is guaranteed to work effectively for the specified Mercedes-Benz model.