Seiko Cal. 6643 - 570

This Spring Drive model from 1978 features a 44mm PVD Black case. It features a Cream dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-ba645b2cd3bc]

Also known as: UFO, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1978

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