From the manufacturer's website:
Duracell Silver Oxide Button Batteries provide reliable, long-lasting power for your specialty devices. They have up to a 4-year guarantee in storage so you can be confident these silver oxide button batteries will be ready when you need them. Duracell Silver Oxide Button Batteries are great for devices like glucometers, calculators and car remotes. And you can be assured that they’re batteries you can trust because Duracell is the #1 trusted battery brand.
- Silver Oxide Button Battery: Duracell's 381/391 Silver Oxide Button batteries provide reliable, long lasting power for your medical devices, watches, toys, electronics and more.
- Long Lasting Power: Duracell coin batteries are engineered for long lasting performance.
Warning: Keep batteries away from children. If swallowed, consult a physician immediately. Battery can explode or leak if heated, disassembled, shorted, recharged, exposed to fire or high temperature or inserted incorrectly. Do not carry batteries loose in your pocket or purse.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.