377 SR 626 SW Button Cell Battery Silver Oxide 1.55V for Wrist Watch These are Button Cell Battery Silver Oxide 1.55V. These are for Wrist Watch. 377 Sr 626 SW Button Cell Battery Silver Oxide 1.55V for Wrist Watch. Silver Oxide For Wrist Watch Provides 1.55V voltage. 377A, 377, SR 626 SW, 364, Button Battery Easy Replacement Watches Cell The Exelent lithium coin cell batteries are simple to replace in a wide variety of everyday devices. Each disc includes engraved identification so you can easily recognize the battery & Watches model. Housed in protective packaging, The batteries can be individually removed without worry of the others rolling away or being misplaced.