Seiko Cal. 5681 - 998

Seiko 5681-998

The Seiko 5681-998 represents an important milestone in Seiko's 1979 lineup. Powered by the 5681 caliber with 33j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-438938abfb6e]

Also known as: Turtle, Helmet

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
36mm
Case Thickness
12.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Champagne
Jewels
33j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1979

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