Seiko Cal. 5661 - 457

This Automatic model from 1981 features a 42mm Titanium case. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-774742732fd8]

Also known as: Monster, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1981

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