Seiko Cal. 3815 - 745

Seiko 3815-745

This Hand-Winding model from 1968 features a 40mm PVD Black case. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-583ca5e3967e]

Also known as: Monster, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
40mm
Case Thickness
12.7mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
30j
Frequency
36,000 bph
Power Reserve
55 hours
Year
1968

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