Originally Posted by marcus fenix The B1/Airwolf is a very easy watch to change the battery on due to the large size of the battery and lack of any complicated securing mechanism on the battery. But if you're going to do it yourself be 100% sure of your abilities because a new module is nearly £800. What you will need (I also use a case holder for this type of work): Caseback opener needs to be the right size for the B1, that ...