Energizer 377 Silver Oxide Button Cell 1.5-Volt Battery Delivers long-lasting, dependable power to your button-battery-operated devices, like medical devices, calculators, toys, and watches Holds power for up to 5 years in storage, ensuring you have button batteries ready when you need them Cell size: 377; Type: Silver Oxide; Volt: 1.5 Replacement for: 376/377, 377BP, D377, SB-AW, SR626SW, SR66 Responsibly designed: Our zero-mercury silver oxide button batteries power devices with less impact on the environment.