Seiko Cal. 5688 - 731

Seiko 5688-731

This Hand-Winding model from 1985 features a 42mm Two-Tone case. With its 22mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-ad52b5bf4116]

Also known as: Turtle, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
13.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Cream
Jewels
31j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1985

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