Features: This is a aftermarket 3 button car remote key fob case. Protect your smart key from everyday wear and tear, and keep it stay as bright as new. Compact in size, small and convenient, easy to carry and store. Best replacement for broken or worn keys, or great for an additional key. Key case and key blade only. Not electronic internals. Just cut the key blade,take the internal electronics(include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready! No need any programming. Specification: Material: ABS + Metal Main Color: Black Button: 3 buttons Blade: Insert Blade Transponder Chip: No Fitment: Fit for Mercedes Benz C E ML S SL SLK CLK Class Package List: 1 * Key Fob Case Note: 1. Please kindly confirm the fitment before ordering to make sure this item is perfectly fit 2. The item is only a key shell which is without PCB board and battery inside.