Seiko Cal. 3813 - 251

Seiko 3813-251

The 3813-251 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e0a7895c5a08]

Also known as: Sportsmatic, Flighty

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
40mm
Case Thickness
12.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Champagne
Jewels
31j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1975

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