Wmicro 144Pcs Watch Repair Tool Kit Set Watchband Adjustment/Opening Watch Backs/Changing Watch Batteries/Changing Watch Gaskets Adjustable Case Opener - excellent for opening waterproof cases up to 34mm Antimagnetic stainless steel tweezers for removing and inserting batteries Antimagnetic screwdriver for removing battery covers Spring bar remover for strap adjustment/replacement 6 watch strap spring-pins each of size