Seiko Cal. 4577 - 621

Seiko 4577-621

This Quartz model from 1976 features a 45mm Stainless Steel case. Powered by the 4577 caliber with 30j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-23efbfac241b]

Also known as: World Timer, Baby Tuna

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
15.1mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
110m
Dial Color
Silver
Jewels
30j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1976

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