Duracell 303/357 Button Cell Batteries provide reliable, long-lasting power for your specialty devices. You can be confident Duracell batteries will be ready when you need them. Duracell Button Cell Batteries feature child secure packaging which makes it nearly impossible to open with bare hands.• Reliable power for watches, toys, medical devices, and more• Child secure packaging• Guaranteed for 4 years in storage• Battery Type: Silver Oxide• Voltage: 1.5V• Size: 303/357• 3-pack Guaranteed for 4 years in storage 1.5V 303/357 button cell batteries | Duracell 303/357 1.5V Silver Oxide Button Cell Batteries, 3-Pack