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SR621 Button Cell Batteries (10 Pack) – 1.55V Silver Oxide – Also Known as 364, SR621SW, SG1, V364 – Long-Lasting Watch & ElectronicsSR621 Battery – 1.55V Silver Oxide Button Cell for Watches and Precision Devices The SR621 battery is a compact, high-precision 1.55V silver oxide button cell designed for small electronic devices requiring consistent and reliable power. Ideal for wristwatches, calculators, medical instruments, and small electronics, it provides stable voltage and a long shelf life for optimal device performance. Key Features: Model: SR621 (Also known as 364, SR621SW, SG1, V364) Type: Silver Oxide Button Cell Voltage: 1.55V Dimensions: 6.8 mm (diameter) × 2.1 mm (height) Applications: Watches, calculators, medical devices, small electronics Performance: Stable voltage output and long-lasting power Shelf Life: Up to 5 years Mercury-Free: Environmentally safe and RoHS compliant Engineered for durability and consistent performance, the SR621 is your trusted choice for powering delicate electronics.