Button Cell Battery, 309/393, 1.5V

Duracell® Silver Oxide Button Batteries provide reliable, long-lasting power for your specialty devices. They have up to a 3-year guarantee in storage so you can be confident they will be ready when you need them. Great for medical devices, calculators, wearables, and many other specialty devices. You can be assured that they’re batteries you can trust because Duracell is the #1 trusted battery brand (December 2016 Duracell Claim Study). Battery Type: Silver Oxide; Battery Size: 309/393; For Use With: Everyday Electronic Devices; Voltage: 1.5 V.