Seiko Cal. 6639 - 835

This Solar model from 1979 features a 42mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-119c51413c49]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1979

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