These C size batteries from Duracell are part of their Plus Power range which is their longest lasting yet. They are ideal for toys, radios or other appliances that take this size of battery and the Duralock technology is designed to minimise power drainage while they're not in use. Features and Benefits Long Lasting Duracell Plus C batteries have +100% extra life. Longevity performance compared to the compared to Minimum Average Duration across 2015 IEC C-sized battery tests. Results may vary by device or usage pattern. (www.iec.ch) Suited For Everyday Devices Duracell Plus batteries are multi-purpose alkaline batteries suited for everyday devices. Duralock Technology Duralock technology keeps unused Duracell batteries fresh and powered for up to 10 years in ambient storage. Specifications Size: C 4 Pack No.1 trusted battery brand Duracell Plus C Alkaline batteries Long lasting, +100% extra life Suited for everyday devices such as toys, flashlights, radios, etc. Duralock tech