Energizer Alkaline 377 Button Batteries (2-Pack) in the Coin & Button Batteries department at Lowes.com
Amazon.com: Duracell 376/377 Silver Oxide Button Battery, 1 Count Pack, 376/ 377 1.5 Volt Battery, Long-Lasting for Watches, Medical Devices, Calculators, and More : Health & Household
Energizer Watch Battery 377 1.55v – Battery World
Amazon.com: Energizer 377 / 376 Watch Batteries (Pack of 5) : Health & Household