Seiko Cal. 5642 - 815

Seiko 5642-815

This Hand-Winding model from 1987 features a 36mm PVD Black case. With its 21mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-703a018ae053]

Also known as: Tuna, Helmet

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
13.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1987

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seikata-wm-703a018ae053