Seiko Cal. 3813 - 770

Seiko 3813-770

This Spring Drive model from 1982 features a 45mm Titanium case. Powered by the 3813 caliber with 19j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-850d065dfc21]

Also known as: Crown, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
45mm
Case Thickness
15.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
19j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1982

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seikata-wm-850d065dfc21