Duracell 364 1.5V Silver Oxide Button Cell Battery SR60 SR621SW 363BrandDuracellBattery Cell CompositionSilver OxideVoltage1.5 VoltsAbout this itemSilver Oxide Battery: Duracell's 364 1.5V batteries provide reliable, long lasting power for your watches, calculators and medical devices.Long Lasting Power: Duracell Silver Oxide batteries are engineered for long lasting performance.Power Preserve Technology: Infused with triple corrosion protection for battery power you can count on.Guaranteed for 4 years in Storage: Duracell Silver Oxide batteries are guaranteed for 4 years in storage.#1 Trusted Battery Brand: This Duracell 389/390 Silver Oxide battery is equivalent to SR60, SR621W, and 363.