Seiko Cal. 6157 - 721

The Seiko 6157-721 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-dc160bfed3cd]

Also known as: Arnie

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1972

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