Duracell Specialty batteries are dependable power solutions in all specialty devices, performing equally well as camera batteries and remote control batteries. Made with high-purity lithium for up to 50% more power vs. IEC Service Output test minimum average duration for CR17345 size. Results may vary by device and usage pattern. Suitable for use in smart home devices (sensors, keyless locks, smoke detectors), photo flash, flashlights, bike accessories and electronic dog collars. They have up to 10 years of in-storage guarantee so you can be confident these lithium batteries will be ready when you need them. 123 size battery. Single pack.