Seiko Cal. 5681 - 306

This Hand-Winding model from 1973 features a 40mm Hardlex-Coated Steel case. With its 21mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-62817c79d370]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1973

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