Specification: Type: Lithium Battery CR2032 Power: 3V Works for toys ,Watches, Cameras, Calculators, Car Security Alarm, Keyless Car Remotes, Organizers, Computer Equipment (memory backup battery) CMOS ATTENTION: *Do not recharge or dispose of in fire *Keep in a dry and cool place Insert battery in right direction Wipe off the battery be before use Package: 20PCS CR2032 Battery