Duracell - Silver Oxide 309/393 1.5 V 80 mAh Electronic/Watch Battery 1 pk - Case of 6

The Duracell 309/393 Silver Oxide Button battery is designed to provide reliable power to specialty devices like watches, medical devices, digital thermometers, and other electronics. Duracell 309/393 Silver Oxide Button batteries are guaranteed for 4 years in storage, so you can be confident these batteries will be ready when you need them. From storm season to the holidays, Duracell is the #1 trusted battery brand. *