Seiko Cal. 3815 - 777

Seiko 3815-777

This Automatic model from 1982 features a 37mm Stainless Steel case. Powered by the 3815 caliber with 31j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-f892b70701ca]

Also known as: Tuna, Sea Horse

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
15.7mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Navy
Jewels
31j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1982

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