Seiko Cal. 4431 - 361

This Quartz model from 1985 features a 41mm PVD Black case. Powered by the 4431 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-25bf1ca9a8cd]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1985

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