Seiko Cal. 6637 - 142

Released in 1972, the Cal. 6637 with design code 142 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-c74d2ced6418]

Also known as: Silverwave, Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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