Seiko Cal. 5660 - 137

Seiko 5660-137

This Spring Drive model from 1999 features a 44mm Hardlex-Coated Steel case. Powered by the 5660 caliber with 34j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-7ac0d6502ab2]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
8.4mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
110m
Dial Color
Burgundy
Jewels
34j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1999

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seikata-wm-7ac0d6502ab2