marcodicristo8 years ago+121What size screwdriver do i need to loosen the screws of the battery compartment?Show in original language (German)Anonymous8 years ago • purchased this product+110purchased this productSwissTools PH0 or better PH00 will work.Show in original language (German)CommentAnonymous8 years ago • purchased this product-101purchased this productIt also works well with a two-franc note.Show in original language (German)Comment1 comment