Seiko Cal. 6641 - 339

This Hand-Winding model from 1978 features a 35mm PVD Black case. It features a Black dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-08c11c44bca3]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1978

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