Key shell, alarm box fits most Volvo models. Shell has 3 buttons and is powered by 1pc CR2025 battery. If your existing shell is worn out, buttons are torn or damaged, can you sell the car? Then a new shell where you move over the electronics is a good option. Which key/shell fits my car? same way, the same number of buttons, etc. will fit the shell with the greatest probability. How do I change the shell? Step 1. Open your existing key, tow electronics, battery and immobilizer and place it in the new key housing. Close the key shell. a search on youtube. Step 2. Over the key blade (the part that bypasses the ignition )to the new key housing. You can also choose to make a new copy of the key blade. Remember that you need to submit the key to the key manufacturer to resharpen the key. This is normal if the blade is damaged. VOS601998-2000VOLVOS701999-2005VOLVOS801997-1998VOLVOS902000-2004VOLVOV401998-2005VOLVOV701997-1998VOLVOV902003-2005VOLVOXC702003-2005VOLVOXC90Details:Drivsav1stCR2 025batteries(Not included)Key blade:-Packaging:1-pack