Seiko Cal. 3874 - 680

Seiko 3874-680

This Spring Drive model from 1990 features a 38mm PVD Black case. Powered by the 3874 caliber with 30j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-9bb1f02a86fb]

Also known as: Samurai, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
38mm
Case Thickness
12.0mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1990

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