Seiko Cal. 6637 - 176

Released in 1982, the Cal. 6637 with design code 176 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-7626225dc230]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1982

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