Seiko Cal. 6357 - 521

Seiko 6357-521

The Seiko 6357-521 represents an important milestone in Seiko's 1985 lineup. Powered by the 6357 caliber with 20j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-0c12ae287ee3]

Also known as: Samurai, Baby Tuna

Specifications

Movement
Solar
Case Material
Titanium
Case Width
37mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Black
Jewels
20j
Frequency
36,000 bph
Power Reserve
39 hours
Year
1985

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