Duracell High Power Lithium CR2 Battery 3V, pack of 1 (CR15H270) suitable for use in sensors, keyless locks, photo flash and flashlights

From the manufacturer

Long lasting power guaranteed.
Available in a variety of sizes: CR2, 123, 245,1/3N
Suitable for use in smart home devices (sensors, keyless locks, smoke detectors), photo flash, flashlights, bike accessories and electronic dog collars
Guaranteed 10 years in storage* *Storage conditions between 6°C and 29°C