1.&high quality 2.Best replacement for a key with broken buttons or worn key case. 3 The item is a DIY remote key. Frequency 433MHz 4 Replacement smart keyless entry remote key with battery and electronics installed. Product specifications Colour: Black Material: plastic case button:3 buttons Replacement part For KR55WK48801 Frequency: 433Mhz Chip: 4D63-6F 80 bit (Also fits for ID83 Chip.) Fit For: For B-Max (2012 - Present) For C-Max (2010 - Present) For Fiesta (2008 - Present) For Focus (2011 - Present) For Galaxy (2010 - Present) For Grand C-Max (2010 - Present) For (2011 - Present) For Mondeo (2007 - Present) For (2010 - Present) Package Contents: 1* remote key case 1* circuit board 1* small key Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.