Seiko Cal. 5660 - 634

Seiko 5660-634

The Seiko 5660-634 represents an important milestone in Seiko's 1985 lineup. Powered by the 5660 caliber with 28j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-2a450c6aaddc]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
37mm
Case Thickness
14.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
60m
Dial Color
Cream
Jewels
28j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1985

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