Seiko Cal. 6357 - 521

This Hand-Winding model from 1980 features a 45mm Titanium case. It features a Black dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-7d562cb0e553]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1980

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