suitable for 3 Button Remote Car Key Control Circuit Board 315MHz/433MHz For-BMW 3 5 Series E46 E39 EWS without Key Shell-CHENG DU SI XI Condition: Button: 3 Buttons Electronics Board: Yes Frequency: 315Mhz / 433mhz Interchangable frequency instruction: Please press ""unlock"" button continuely, then press ""trunk""button for 5 times. The frequency could be interchanged between 315mhz 433Mhz. Fitment: 1998-2005 for 3 5 7 Series 1998-2005 for X5 Z3 Z4 2001-2004 01 02 03 04 for 330 330i 2001-2004 for 525 525i 1998-2000 for X5 Z3 Z4 2003-2005 for 3,5,7 SERIES 2001-2004 for 3 SERIES 1998-1999 for 3,5,7 SERIES 1998-2000 for 325 325i 325ci + i ci xi 2001-2004 for 325 325i colour:green Material:ABS Package Contents: 1 X Remote Car Key Board 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. Please pay attention to the title and description when buying, and pay attention to the title and description when buying.