Part Numbers/FCC ID: KR55WK49127 KR55WK49123. Frequency: 315MHzPackage for car key fob:2 x Car Keyless Entry Remote (Battery Included). Size: 6.8x3.6cm / 2.68"x1.42"(L*W). Please check the OE number/FCC ID and product picture with the original one before purchase.Notice Programming: This remote and door key must be programmed and cut by a qualified locksmith or dealership(consult some different locksmiths before programming to ensure it is successful).NOTE a working key fob was needed in order to add a new key. This remote must be programmed and cut by a qualified locksmith or dealershipCompatible: for BMW 1 Series 2006-2010, for BMW 3 Series 2006-2011, for BMW 5 Series 2006-2011, for BMW 6 Series 2006-2010, for BMW M5 2006-2009, for BMW X5 2006-2014, for BMW M6 2006-2010, for BMW M3 2008-2011, for BMW Z4 2013-2016, for BMW X6 2008-2014Pros of our keyless remote: 3 buttons car key: Lock, Unlock, Trunk release, With built in chip, sensitive response, Fast response, wireless remote control. Please confirm the original key has the same button pattern. Please note: The key is a semi-intelligent key, which does not have the function of one-button start.