Seiko Cal. 4549 - 640

This Hand-Winding model from 1974 features a 40mm Hardlex-Coated Steel case. With its 22mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-a0d6f66cb1b6]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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