Seiko Cal. 4421 - 680

Seiko 4421-680

This Automatic model from 1968 features a 43mm Stainless Steel case. Powered by the 4421 caliber with 29j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-0fe95d4295e3]

Also known as: UFO, Baby Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
11.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Silver
Jewels
29j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1968

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