Seiko Cal. 4456 - 188

This Spring Drive model from 1990 features a 37mm PVD Black case. It features a Cream dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-1720e33a6237]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1990

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