New Smart Remote Key 3+1 Button 315MHz With NEC Chip For Mercedes-Benz (Key Fob Case)

This is a new smart remote key fob from keysale2015.

It's a 3+1 button design, running at 315MHz with an NEC chip.

It's basically the shell and electronics for a Mercedes-Benz—think of it as a replacement case.

Made from ABS plastic in China.

Comes with a warranty.

A good way to replace a worn-out original key.