Product Features Lithium battery CR2025 battery 3V Energizer batteries (2 batteries) Manufacturer's part number: ECR2025BP Compatible with watches, small electronics, health and fitness equipment and toys Will fit all devices that operate using size 2025 batteries Equivalent to the DL2025, BR2025, KL2025, L2025, ECR2025, KCR2025, E-CR2025, KECR2025 and Citizen 280-205 Energizer 3V battery works for medical devices, watches, computer motherboards, calculators, car FOB and security devices Marked for identifying positive side Easy to replace Retains charge for up to 8 years Withstands temperatures ranging from -22-degrees up to 140-degrees F Mercury-free CR2025 Energizer lithium batteries