⌚ SILVER BATTERY mini Seizaiken / SEIKO 303 / SR44SW / SR44
• Long lifespan and reliable performance
• Stable voltage throughout the usage period
• Low self-discharge rate
• Silver oxide technology (Silver Oxide)
• High resistance to leakage
• Ideal for watches and precision electronics
High-quality button cell battery mini Seizaiken / SEIKO 303 (SR44SW), mainly designed for analog and digital watches. It also works perfectly in calculators, medical devices, and other small electronic devices requiring a stable power source.
Thanks to silver oxide technology, it provides a constant voltage of 1.55 V and long, trouble-free operation, ensuring high precision in small watch mechanisms.

Product features mini silver battery Seizaiken / SEIKO 303 / SR44SW / SR44
Model / Manufacturer Code
Seizaiken / SEIKO 303 / SR44SW
Battery Type Designation
Silver battery
General range of button cell / coin cell battery
357 / SR44
Voltage [V]
1.55
Diameter [mm]
11.6
Height [mm]
5.4
Contents
- blister 1 piece.
Product features mini silver battery Seizaiken / SEIKO 303 / SR44SW / SR44
Model / Manufacturer Code
Seizaiken / SEIKO 303 / SR44SW
Battery Type Designation
Silver battery
General range of button cell / coin cell battery
357 / SR44
Voltage [V]
1.55
Diameter [mm]
11.6
Height [mm]
5.4
Contents
- blister 1 piece.
Product Safety Data mini silver battery Seizaiken / SEIKO 303 / SR44SW / SR44
Manufacturer details
Seiko Instruments Inc.
8, Nakase 1-chome, Mihama-ku, Chiba-shi
261-8507 Chiba
Japonia
Email: info@seiko-instruments.com
8, Nakase 1-chome, Mihama-ku, Chiba-shi
261-8507 Chiba
Japonia
Email: info@seiko-instruments.com
Responsible entity:
Seiko Instruments GmbH
Siemensstr. 9
D-63263 Neu-Isenburg
Niemcy
Email: info@seiko-instruments.de
Siemensstr. 9
D-63263 Neu-Isenburg
Niemcy
Email: info@seiko-instruments.de


