Most Luxurious BMW Key is a Montblanc

Montblanc has always been known for their writing instruments and watches, but they're looking to get a bit more "automotive" with their collaboration with BMW for the new 5 Series. The "Montblanc for BMW" partnership has allowed the two companies to create a new Activity Key Set that turns the normal BMW Activity Key "into an elegant personal accessory."
Instead of having the key in your pocket, this Activity Key is turned into a stylish accessory that can be worn around the wrist. Keeping it attached to your person is a Montblanc leather wristband in fine black cowhide leather. This key also includes a key fob that has the words "Montblanc for BMW" embossed on a leather insert.

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Along with this new Activity Key, BMW unveiled a few more luxurious accessories, including a BMW Headphones Bowers & Wilkins P3 S2 and the BMW Smart Writing Set.