Note: the original key blade is not fit the new key. The upgrade key must be cut,then it can work.About battery, please use CR1620 battery. Condition: 100% Brand NewColor: As picture showsButton: 2/3 ButtonsKey Blank: Yes (HU83/VA2 Blade)Size: 7.5cm*3.6cm*1.5cm(L*W*H)Weight: 63g Features: 1. Best replacement for a key with broken buttons or worn key case.2. Key case and uncut key blade only.Not electronic internals. 3. Get blade cut by local locksmith/dealer or swap the blade with your original. 4. After cut blade, take the internal electron(include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready Fitment:For Peugeot 107 207 307 307S 308 407 607For Citroen C2 C3 C4 C6 C8 (Please check the key blade carefully before buying, Original key shell with battery place CE0536/CE0523)... Important Note: 1. Please don't give me with picture feedback...2. The original key blade is not fit the new key. The upgrade key must be cut, then it can work. It can't use the old original key blade. About battery, please use CR1620 battery. 3. You need to go to your local dealer or Locksmith shop to cut the key,Locksmith should charge less than Dealer. 4. Please make sure your key is exaxtly same as ours, if you are not sure please send your original key photo to us for confirming, we will help you to buy the correct key shell. Package Includes:1 X Key Shell