Seiko Cal. 4539 - 215

This Hand-Winding model from 1966 features a 41mm Titanium case. With its 21mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-ada96158b080]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1966

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