Condition: 100% Brand New Color: Black Button:2/3/4 Buttons Key Blank: Yes Frequency:315Mhz / 433MHZ Electronics Board: Yes Fitment: For Mercedes For Benz BGA(2011-2014)W164.W166.W169.W172.W197.W201.W202.W203.W204.W207.W208.W209.W210.W211.W201.W215.W216.W218.W220.W221.W230.W246.463.639And other model with the same specifications of key blank and battery holder listed as below section... ImportantNote: Please Check and make sure your remote is using the same transmitter and chip as Our items before buying. (1). You need to program the key at local qualified automotive locksmith before using. (2). The key has 2 kinds of frequency, 315/433MHz. Please select a correct one for your car. (3). Propose you use MB IR code reader to read and write the key. Note - please disregard the frequency marking on key shell. We'll set frequency according to your order. How do I know my key's frequency? usually you can find the frequency on battery holder or under battery cover. Package Includes: 1 X Remote Car Key