Duracell special lithium button cells 232 are made with high purity lithium and offer up to 50% longer life for your specialized devices. These lithium button cells offer a warranty of up to 10 years of storage. To ensure the safety of your children, Duracell has developed Baby Secure technology consisting of applying a bitter-tasting layer on the back of the cell, and the Baby Secure package design tamper-proof and with double blister. They are designed for keys with magnetic sensor, small remote controls, scales, technological accessories, sensors, medical devices and sports devices.