Seiko Cal. 5623 - 938

Seiko 5623-938

The Seiko 5623-938 represents an important milestone in Seiko's 1974 lineup. Powered by the 5623 caliber with 30j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-6e7a1b3b1125]

Also known as: Baby Tuna

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
41mm
Case Thickness
15.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Cream
Jewels
30j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1974

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