C'mon Tesla you can do better. I assume most people getting a key FOB are doing so because of problem with their phone or they prefer "older" technology. The FOB came in a great box, very high class and even had two batteries. But no way to attach to a key chain and no instructions!!! So you MUST go on line to see what to do. You read that the battery is good for 5 years, so why a second when a simple sheet of instructions or a way to attach to a key chain would be FAR more helpful and likely slightly less money. So I had to go on eBay to find a small lanyard to attach the FOB to keys. So again C'mon Tesla you can do better.