The worst thing that could happen before a night dive just did! Your Laser Stick dive light batteries are dead. Never leave for your holiday without some spare batteries. Don't for your Dive Computer need's some too! This Lithium Button Cell Battery can be used in small electronic devices like cameras and calculators and watches. Lithium batteries are a necessity in small electronics such as television remote controls, toys or flash lights and they produce about 3 volts per cell. This CR2032 Button Cell Battery provides extensive long power life and work effectively in both low and high temperature. Excellent continuous power sources to your device by these Button Cell Battery. For use with toys, calculators, watches, games and other electronic appliances.