Seiko Cal. 6657 - 412

Seiko 6657-412

The Seiko 6657-412 represents an important milestone in Seiko's 1973 lineup. Powered by the 6657 caliber with 34j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-8748617a7ebf]

Also known as: Baby Tuna, Emperor

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
39mm
Case Thickness
12.9mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
190m
Dial Color
White
Jewels
34j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1973

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