Seiko Cal. 6310 - 257

Seiko 6310-257

This Quartz model from 1969 features a 45mm Two-Tone case. With its 18mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-f495c25a7cd7]

Also known as: Tuna, Crown

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
45mm
Case Thickness
12.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
130m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1969

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