Seiko Cal. 5631 - 988

Seiko 5631-988

This Kinetic model from 1991 features a 42mm Hardlex-Coated Steel case. Powered by the 5631 caliber with 24j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-e5418950c3d6]

Also known as: Pogue, Baby Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
12.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
50m
Dial Color
Green
Jewels
24j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1991

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seikata-wm-e5418950c3d6