Two (2) Panasonic CR1616 Battery in new Child-Safe Retail Consumer Packaging, by Premium Batteries Authentic Panasonic Brand, Panasonic is the number one manufacturer of coin cell batteries in the world that all other manufacturers use as the standard reference for the highest quality. Panasonic's most significant advantages are extended shelf life, good low-temperature operation, high operating voltage, excellent leakage resistance, and reliable performance. PREMIUM BATTERIES is a private label brand using only world-class branded button and coin cell batteries from leading manufacturers. Only the highest grade of Japanese brands are used in our private label packaging. We use high-quality packaging materials to insure this package is Child-Safe. Packaged in U.S.A., Premium lithium coin cell brands such as Panasonic offer significant advantages over cheaper Chinese or generic brands. Used in diverse product applications: audio equipment, calculators, cameras, light meters, data acquisition systems, electronic communication devices, electronic games, electronic wristwatches clocks, hearing aids, industrial monitors/controls, medical equipment, memory backup, microcassette recorders, nurse call systems, remote keyless entry (Key FOB), security devices, transceivers, radios, remote controls, motherboards and more. For keyless entry remotes, Panasonic products are trusted to perform very reliably.