Designed for long-lasting use, the EnergizerA(R) Lithium 2032 Battery will keep your electronics powered up and ready to roll. Perfect for use in key fobs, reticle illumination, games and more. Lithium-based power for long lasting reliability Ideal for optics, keyless entry devices, heart-rate monitors, glucose monitors and more Replacement for 5004LC, BR2032, DL2032, ECR2032, ST-T15 Order today!