Seiko Cal. 5658 - 763

The Seiko 5658-763 represents an important milestone in Seiko's 1978 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-b6983c07ca9e]

Also known as: Monster, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1978

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