Seiko Cal. 7181 - 638

Seiko 7181-638

This Hand-Winding model from 1974 features a 46mm Hardlex-Coated Steel case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-f04a91a569bd]

Also known as: Turtle, Samurai

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
15.2mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Silver
Jewels
17j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1974

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