Seiko Cal. 7147 - 404

Seiko 7147-404

The Seiko 7147-404 represents an important milestone in Seiko's 1971 lineup. Powered by the 7147 caliber with 21j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-f7eaf7d0ccc3]

Also known as: Monster, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
9.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Silver
Jewels
21j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1971

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