Seiko Cal. 5657 - 521

Seiko 5657-521

This Hand-Winding model from 1998 features a 43mm Two-Tone case. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-39a4f3f918a8]

Also known as: Tuna, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
43mm
Case Thickness
8.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Black
Jewels
25j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1998

Related Models

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