3 Buttons 433Mhz Flip Folding Remote Car Key For Mercedes Benz Smart Fortwo 450 Forfour 451 Roadstar Auto Car Key Case Specifications: Smart Remote CarKeyForMercedes Benz Smart Fortwo 450 Forfour 451 Roadstar Frequency :433 MHz Button: 3 Buttons Circuit Board: with Blade: with Description: 1. The item is a new DIY remote key. 2. The key includes key housing, circuit board. It&x27;s a full remote key. 3. You&x27;ll need to program the key and cut the blade at locl automotive locksmith before using. 4. If your part number isn&x27;t exactly the same as ours , please don&x27;t buy. It will not work. Fitment: for Benz MB Mercedes Smart Fortwo 450 Forfour Roadster City Coupe And other models with same specification of blank key and battery holder listed below section ... Important note: Please check and make sure your remote control uses the same transmitter and chip as our items before purchasing. How do I know this key is suitable for my car? 1.your original key is smart key. 2.your original key has the same buttons. 3.your original key has the same frequency. 4.If above items match, it&x27;s ok to buy this product. Image: The image is of the actual product.Please compare your car key, make sure your item is same as our product before purchasing. 1* Remote Car Key