Seiko Cal. 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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