Seiko Cal. 6645 - 734

This Hand-Winding model from 1971 features a 42mm PVD Black case. With its 18mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-b9c839a29ddb]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1971

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