Seiko Cal. 3817 - 377

Seiko 3817-377

The 3817-377 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-84a6c4916aae]

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
41mm
Case Thickness
12.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Navy
Jewels
27j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1975

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