This item isn't a remote key and it is just a remote key shell case replacement. Key case and uncut key blade only. Not electronic internals.Best replacement for a key with broken buttons or worn key case.Just cut the key blade,take the internal electronic(include immobilizer/transponder chip) from remote and place them to our key shell,then you are ready 3 Buttons: Lock/Unlock/TrunkCompatible with:For 307For 308For 407For 607Product size: 6.0 x 3.2 x 1.7cm / 2.4 x 1.3 x 0.7inProduct weight: Approx. 70g / 2.4ozMaterial: PlasticPackage List:2 x Key Shell CaseOnly 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.