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Features:
This item isn't a remote key and it is just a remote key shell case replacement. Not electronic internals.
Best replacement for a key with broken buttons or worn key case.
There is NO interior (remote/electronics/transponder chip)unit inside.
Just take the internal electroni(include immobilizer/transponder chip) from original remote and place them to our key shell，then you are ready!
Buttons 4: Lock ，unlock， trunk and panic.

Specifications:
Manufacturer Part Number: FITS: MERCEDES-23234
Product size: 6.6 * 3.7 * 1.4cm / 2.6 * 1.5 * 0.6in
Product weight: Approx. 9g / 0.3oz
Package size: 6.6 * 3.7 * 1.4cm / 2.6 * 1.5 * 0.6in
Package weight: Approx. 10g / 0.3oz

Package list:
1 * Key Shell Case