Duracell Specialty LR54 Alkaline button batteries - up to 50% more power (vs. IEC standard test minimum average duration for LR54 size. Results may vary by device and usage patterns) for your specialty devices. They have up to 5 years of in-storage guarantee so you can be confident these alkaline Button batteries will be ready when you need them. They are suitable for use in watches, calculators, toys and photographic applications among other applications.