Seiko watch batteries are silver oxide batteries. Battery size: 395. Type: Silver Oxide. Other designations: 399, 927, SB-AP/BP, 280-44, 280-48, GP399, GP395, V399, V395, 543, 523, 195, 610, CX927, S28, SR927SW, SR927W, SR57, LR927, LR57, G7, AG7.
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