[Good Quality Replacement Key Case]: Best replacement for keys with broken buttons or worn key case. Key case only. [Not a remote]: No internal electronics, this is a replacement key case. [You can replace it by yourself]: Remove the internal electronics (including immobilizer/transponder chip) from original remote, place them on our key case and you're done! You can do it by yourself, it's very easy and simple. [Compatibility]: This remote key case fits for BMW 1 3 5 6 series E90 E91 E92 E60 etc. ...... and all other models with the same specifications of key blank and battery holder as listed in the section below ..... [Sturdy and Durable Key Case]: Made of high quality materials instead of the durable smart keyless remote case. Specifications: Product Name: BMW Car Key Replacement Case Product Material: ABS Product Weight: 40g Push Button: 3 Keys List: BMW Car Key Replacement Case *1 Pack