





Product description



Seiko Instruments has supported the evolution of quartz watches for many years by providing silver oxide batteries and other watch components around the world.
Seiko Instruments Inc. (SII) has applied precision processes cultivated by watch manufacturing technology and started the production of silver oxide batteries in 1975. We have a lineup of high-quality silver oxide batteries for watches, small and large, quartz and digital. Seiko Instruments has supported the evolution of quartz watches for many years by providing silver oxide batteries and other watch components worldwide.
100% mercury-free made in Japan.Compatible with all kinds of watches, from big to small, from quartz to digital. Our products are manufactured at our factory in Sendai, located in the Tohoku region of northeastern Japan.Manufactured in a clean environment to ensure no impurities contaminate our products. We have achieved highly pure, long-lasting, reliable battery production.With superior metal processing techniques cultivated over years of watchmaking, we have achieved an airtight seal structure to ensure high leakage resistance.
Get steady long-lasting, reliable, and mercury-free batteries for your watch with Seizaiken.

Silver oxide batteries need a small amount of mercury in order to prevent performance degradation and leakage. While environmental concerns became an issue worldwide, SII started the research of mercury-free batteries in 1991 to decrease the use of environmentally harmful substances in batteries. In 2006, SII finally succeeded in developing a mercury-free silver oxide battery that has equal or better characteristics than the present silver oxide battery. Particularly, we have been able to significantly imtoprove leakage resistance and discharge characteristics in low temperatures compared to the present silver oxide battery.
Applications:
WatchesClocksCamerasCalculatorsRemote controllersCard radiosDigital clinical thermometersElectronic gamesMeasurement equipmentsHealth appliances

Compatible with all kinds of watches
Silver oxide batteries need a small amount of mercury to prevent performance degradation and leakage. While environmental concerns became an issue worldwide, SII started the research of mercury-free batteries in 1991 to decrease the use of environmentally harmful substances in batteries. In 2006, SII finally succeeded in developing a mercury-free silver oxide battery that has equal or better characteristics than the present silver oxide battery. Particularly, we have been able to significantly improve leakage resistance and discharge characteristics in low temperatures compared to the present silver oxide battery.

For Calculators
Seiko Instruments Inc. (SII) has applied precision processes cultivated by watch manufacturing technology and started the production of silver oxide batteries in 1975. We have a lineup of high-quality silver oxide batteries for watches, small and large, quartz and digital. Seiko Instruments has supported the evolution of quartz watches for many years by providing silver oxide batteries and other watch components worldwide.

Digital Medical Devices
The Seizaiken Silver Oxide button battery is designed to provide reliable power to specialty devices like watches, medical devices, digital thermometers, and other electronics. Seizaikenl’s Silver Oxide Button batteries are guaranteed long-lasting, so you can be confident these batteries will be ready when you need them. From storm season to medical needs to the holidays, Seeizaiken is the trusted battery brand.

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Customer Reviews
4.7 out of 5 stars 1,553
4.7 out of 5 stars 1,553
4.7 out of 5 stars 1,553
4.7 out of 5 stars 1,553
4.7 out of 5 stars 1,553
4.7 out of 5 stars 1,553
Voltage
1.55 V 1.55 V 1.55 V 1.55 V 1.55 V 1.55 V
Capacity
165 mAh 20 mAh 38 mAh 28 mAh 55 mAh 145 mAh
Diameter
11.6 mm 6.8 mm 9.5 mm 6.8 mm 9.5 mm 5.8 mm
Height
5.4 mm 2.15 mm 2.05 mm 2.6 mm 2.7 mm 2.7 mm
IEC Model
SR44W SR621 SR920 SR626S SR927 SR616
377 SR626SW | Silver Oxide Watch Battery | 100% Mercury-Free
Nominal Capacity: 30 mAh | Voltage: 1.55V – Excellent leakage resistance | High reliability
Used primarily in watches, but can also be used in cameras, calculators, toys, computers, audio books, games and more
Japanese quality and consistently great performance, battery after battery | High capacity retention on storage (low self-discharge)
Seiko heritage in a battery with recades of research and development in the watch industry – Seizaiken represents incredible quality, unmatched in their energy stability and long term durability – Perfectly optimized batteries for modern quartz watches
$ 3.99