Seiko Cal. 3813 - 537

This Spring Drive model from 1985 features a 43mm Two-Tone case. It features a Cream dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-1c17f98d5225]

Also known as: Turtle, Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1985

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