JAPANESE QUALITY: Premium silver oxide watch batteries manufactured in a high-tech clean room facility in Japan, ensuring consistent performance and reliability TECHNICAL SPECIFICATIONS: 1.55V voltage output with 30 mAh capacity, dimensions of 6.8 mm diameter and 2.6 mm height, weighing 0.39 g VERSATILE COMPATIBILITY: Model SR626SW/377 suitable for watches, cameras, calculators, toys, computers, audio books, and various electronic devices MERCURY-FREE DESIGN: 0% mercury composition ensures safer usage while maintaining excellent performance and energy stability LONG-LASTING POWER: High energy density with superior capacity retention during storage, providing reliable power for extended periods