The Energizer 2032. Used in heart-rate monitors, keyless entry, glucose monitors, toys & games. The World’s #1 Longest Lasting 2032 Battery!*Holds power for up to 10 years in storageUsed in heart-rate monitors, keyless entry, glucose monitors, toys & gamesHolds power for 8 years in storagePerforms in extreme temperatures (-22 to 140 F)Child Resistant PackagingCell size: 2032IEC: CR2032Type: Lithium CoinVolt: 3Replacement for: 5004LC, BR2032, DL2032, ECR2032, ST-T15