Seiko Cal. 4488 - 740

Seiko 4488-740

This Spring Drive model from 1969 features a 41mm Stainless Steel case. Powered by the 4488 caliber with 33j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-52531324ed63]

Also known as: Tuna, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
White
Jewels
33j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1969

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