Seiko Cal. 3852 - 420

This Spring Drive model from 1987 features a 37mm PVD Black case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-2c38eb58bf42]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1987

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