Seiko Cal. 6389 - 628

Seiko 6389-628

The Seiko 6389-628 represents an important milestone in Seiko's 1968 lineup. Powered by the 6389 caliber with 27j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-98b21ef225a5]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
36mm
Case Thickness
11.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
30m
Dial Color
Cream
Jewels
27j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1968

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