Seiko Cal. 6657 - 554

Seiko 6657-554

This Automatic model from 1992 features a 46mm PVD Black case. Powered by the 6657 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-601c5ad1cd83]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
46mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
190m
Dial Color
Green
Jewels
34j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1992

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seikata-wm-601c5ad1cd83