Condition:100% Brand New Color:Black Buttons:3Buttons Transponder Chip:No Electronics/Battery:No Weight:39g Size:7.1cm*3.8cm*1.2cm(L*W*H) Please note:the modified key needs two battery(cr2016),which is different from the car key Features: Best replacement for a key with broken buttons or worn key case. Key case only. No electronic internals. This is an aftermarket replacement case. Take the internal electronics(include immobilizer/transponder chip) from remote and place them to our key shell,then you are ready Good quality, durable to use. Fit to: For Mercedes For Benz B C E ML S CLK CL Pls compare with pictures before purchase, make sure your key is exactly as same as pic shows Package Includes: 1 X Key Case Shell