Silver 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.