This item isn't a remote key and it is just a remote key shell case replacement to protect your immobilizer.

Features:
3-Buttons
Best replacement for a key with broken buttons or worn key case.
Perfect replacement for the original motors and make your key look like the new one.
There is NO interior (remote/electronics/transponder chip)unit inside.
Just cut the key blade, take the internal electronic(include immobilizer/transponder chip) from original remote and place them to our key shell, then you are ready!

Specifications:
Competible with: Lexus ES300 GS LS IS RX
Manufacturer Part Number:CLBT/C/245/2002
Interchange Part NO: 3 Button Automobile Key 39mm 1.50" short blade
Other Part Number: Uncut blade replacement blank Key Case shell FOB
Product Size: 8.5 * 3.5 * 1.5cm / 3.4 * 1.3 * 0.6in
Product Weight: Approx. 15g / 0.53oz
Package Size: 8.5 * 3.5 * 1.5cm / 3.4 * 1.3 * 0.6in
Package Weight: Approx. 16g / 0.6oz

Note: This item isn't a remote key and it is just a remote key shell case replacement. Not electronic internals.

Package list:
1 * Key Shell Case