Battery Specs:

• 100% Brand New Authentic Seizaiken Battery in blister cell packaging
• Also Compatible with: SR512SW. V335, Bulova: 622, Timex: SB-AB, Citizen: 280-68
• Compatible for cameras, calculators, watches, toys and other electronic devices
• Output: DC 1.55V
• Capacity: 15
• Thickness: 1.25
• Diameter: 5.8 
• Chemistry: Silver Oxide
• These batteries were manufactured less then a year a go and they have a shelf life of over 5 years so they are 100% fresh. There is no expiry date print on the packaging

Japanese Equivalent: SR512SW