PRODUCTSProducts Home Micro Batteries Crystal Resonators Superior performance Co-Ni Alloy Products (SPRON) Rare Earth Magnets (DIANET) Precision Turned Parts Machine Tools Miniature Ball Bearings Thermal Printers Inkjet Printheads Metronomes/Tuners
Micro Batteries Crystal Resonators Superior performance Co-Ni Alloy Products (SPRON) Rare Earth Magnets (DIANET)
Superior performance Co-Ni Alloy Products (SPRON)
Rare Earth Magnets (DIANET)
Precision Turned Parts Machine Tools Miniature Ball Bearings
Thermal Printers Inkjet Printheads
TECHNOLOGY Technology Home Technological Philosophy History of Innovation Research and Development Quality Assurance Intellectual Property Global Network Technology Topics
Technological Philosophy History of Innovation
Research and Development Quality Assurance
Intellectual Property Global Network
sustainability Sustainability Home Message SII Group Sustainability Environment Social Governance
Corporate Profile Corporate Profile Message from the President Outline History SII Group/Japan SII Group/Worldwide Core Values SII Group Charter of Corporate Behavior Code of Conduct Seiko Group
Message from the President Outline History
Message from the President
SII Group/Japan SII Group/Worldwide Core Values
SII Group Charter of Corporate Behavior Code of Conduct
SII Group Charter of Corporate Behavior
Products Micro Batteries Crystal Resonators Superior performance Co-Ni Alloy Products (SPRON) Rare Earth Magnets (DIANET) Precision Turned Parts Machine Tools Miniature Ball Bearings Thermal Printers Inkjet Printheads Metronomes/Tuners
SII Technology Technological Philosophy History of Innovation Research and Development Quality Assurance Intellectual Property Global Network Technology Topics
Sustainability Message SII Group Sustainability Environment Social Governance
Corporate Profile Message from the President Outline History SII Group/Japan SII Group/Worldwide Core Values SII Group Charter of Corporate Behavior Code of Conduct Seiko Group
Creating Small Things that Change the World Play Movie
Creating Small Things that Change the World
Building a Better Future through Precision Engineering Micro Energy
Building a Better Future through Precision Engineering
Technology and Quality that Ensure Safety and Security for Next-Generation Mobility Precision Turned Parts
Technology and Quality that Ensure Safety and Security
for Next-Generation Mobility
Creating a Smart Society with Smart Printing Thermal Printers
Creating a Smart Society with Smart Printing
Striving for Coexistence with Society and Harmony with the Earth Sustainability
Striving for Coexistence with Society and Harmony with the Earth
2026.08.21 Chemical Analysis Support System Assisting Decommissioning Operations LIMS (Laboratory Information Management System)
Chemical Analysis Support System Assisting Decommissioning Operations LIMS (Laboratory Information Management System)
2026.07.23 Polishing Tiny Internal Surfaces to Support Precision Manufacturing
Polishing Tiny Internal Surfaces to Support Precision Manufacturing
2026.05.18 SII Crystal Technology’s Technological Capabilities Achieved the World’s Smallest Size
SII Crystal Technology’s Technological Capabilities Achieved the World’s Smallest Size
2026.05.17 Patterns can even be printed on the bottom of deep dishes. The future of 3D printing, opened up by SII Printek’s inkjet heads
Patterns can even be printed on the bottom of deep dishes. The future of 3D printing, opened up by SII Printek’s inkjet heads
2026.05.16 Precision metal parts that protect lives - Metal sealing technology from Seiko Instruments that supports automotive brakes
Precision metal parts that protect lives - Metal sealing technology from Seiko Instruments that supports automotive brakes
Machine Tools・Internal grinders
2026.05.28 TOPICS Announcement: Launch of the “Technology Topics” Page
Announcement: Launch of the “Technology Topics” Page
2025.12.10 TOPICS Beware of Counterfeit Miniature Ball Bearings Falsely Claiming to Be Seiko Instruments Inc. Products (关于假冒轴承产品)
Beware of Counterfeit Miniature Ball Bearings Falsely Claiming to Be Seiko Instruments Inc. Products (关于假冒轴承产品)
2025.12.09 RELEASE SII Begins Mass Production of the World’s Smallest (1.0 × 0.8 × 0.32mm) Tuning-Fork Crystal Resonator “SC-10S” Achieving Both a 33% Reduction in Mounting Area and Low ESR
SII Begins Mass Production of the World’s Smallest (1.0 × 0.8 × 0.32mm) Tuning-Fork Crystal Resonator “SC-10S” Achieving Both a 33% Reduction in Mounting Area and Low ESR
2024.07.02 TOPICS Winning of Design Right Infringement Litigation regarding Thermal...
Winning of Design Right Infringement Litigation regarding Thermal...
2023.10.25 TOPICS Regarding Our Recent Data Breach (Third Report)
Regarding Our Recent Data Breach (Third Report)