Seiko Cal. 6678 - 653

This Hand-Winding model from 1971 features a 44mm Hardlex-Coated Steel case. With its 21mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-e9c6a698283f]

Also known as: Monster, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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