You can use this emulator for testing of ESL or you can change damaged ESL to this emulator. This device works with for EIS.It emulates both of old (W202, 208, 210) and new (203, 208, 211, 639). Note:Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Black Material: plastic Package Contents: 1pcs x For MB ESL Emulator Only the above package content, other products are not included. Note: Light reflection 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.