Seiko Cal. 4413 - 722

This Quartz model from 1970 features a 37mm Two-Tone case. Powered by the 4413 caliber with 31j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-e39e4bbb999c]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1970

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