The keys have a chip inside. But the chip you will receive is 48, the chip key needs to match the engine computer to be able to start the car, so you need to ask a local locksmith to do it. This ignition lock comes with 2 keys. The chip is initialized. To solve this problem you can: Have a local locksmith copy the key to the lock you ordered, but ask them to program the chip to match the one in your old key. If you don't have the old key, a locksmith can connect a small machine to the OBD2 port in the vehicle and program the car to work with the key that came with the lock. Part number: 35100-SDA-A71Application:For CR-V 2002-2006For Element 2003-2011For Accord 2003-2007Does not fit 03-05 2-door, Does not work with manual transmission.Important notice:Model year Chip modelAccord 03-05 48Accord 06-07 8EAccord 08-11 46 Electronic chipAccord 14-16 46 Electronic chip 05-06 48 07-11 46 Electronic chipFit 03-06 48Fit 07-08 8EFit 09-11 46 Electronic chipOdyssey 05-06 48Odyssey 07-11 46 Electronic chip 03-05 48 06-07 46 Electronic chip 09-11 46 Electronic chipcolor: Silver + blackMaterial: MetalPackage contents:1 x Ignition lock cylinder2 x Transponder keys with 48 chipsOnly 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 allowed measurement error is +/- 1-3 cm.