Seiko Cal. 5663 - 813

Seiko 5663-813

This Spring Drive model from 1999 features a 41mm Stainless Steel case. Powered by the 5663 caliber with 25j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-675e7922afcf]

Also known as: Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
9.8mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Champagne
Jewels
25j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1999

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